| Show froin fruia C edinburgh journal j the royal observatory at greenwich it ia is fair to suppose that but few persons in this country are igne ignorant rant of the existence of the i f chose whose name stands at the bead of cc s some sume during a mst to lon iun tun ahu anu 1 NU l e in greenwich park may h hive ive ben sen its exterior others othere again edve r dj aj ol 01 il it in in books of voyages or seen the woi wol s pi punted anted in elg the margin ot of maps gnap as th point froin idich lo 10 ruile trude is reckoned but very viry fi w possess adv i P idea ds as to the n iture of tto eli operatic oie ope ole ratio calil sil sll S 9 11 d on oil wi 1161 hill it i of the pa t waiching waie bing hing tin to severe labor id ili co i i c i g the e ex x i various and arid ded dea teli te abs r riols rt kojs to ois uis js for chich tk hit hil hi L h it has long beet been ce celebre lebra or of thi ir r bih aih importance aln n a entil dil mil i cominek i i il point of vi viii v tb thi se pc a ue it e however how eki evi ably elisci u ili iti ilk 1 I 1 in the ann i i i for the plesent present yc ye r oj of G B D airy lq ert the astro enier wen men royal wl 1 I b while it ex exy i s the satis ceory etory state ot or the tho scie scle likic 4 11 i f e c cowains cot tallis ains also some gener il nol not B ib it may c ble ibie the great body ef of readers 0 n ehe the more thau iia lid dional calup of s ch 11 an it would ol 01 iti t cut of p teh ice to lo give pvc b before fore proceeding f itar a brief ot of the L III ili nm i ig which is s po P ted ett tid d oil tb th top of a gravelly hill in fit gree inh onh anh barkon th ste s te of the an rin ciell tower ald ild b il by dux DUK 11 in the reign of ot II 11 iv VI comm comm anding inding indin a le nine fine rid impressive vp u v 0 oer er the shrouded city the flowing rieti t alive une ane wi vi ii ves vessels seis seig and the fertile A t essex li it was lilt by order orber of charies charles 11 II sho aho vho vili viii with mii ih his levity spens beens ei ems to he th b e r n aivre iv re of the import importance ance anke e ot gri ec i cc tilt tiit hi gil fil fi sl s oie was war laid by Flam fiam steed who vrho h A d ho h n pointed pd I 1 omer royal it in augi st olti iiii io 10 lelay delay took place in its comp completion let iet I 1 on alid i id fuini fi i I 1 n I 1 s ebie eble b i lr it itha alfa LN I 1 th acc abc accurate ura t e anstr by the wois wons WOKS of Flam piam ls hs bo lis vis is directed to apply himself hin bin belt beli wi vi h the tile utai st at cire care and licence ce to th rec rei bifi g tile tb soi sot the tile me mc tons troas Lons of the heavens and lilt pla pia 3 of the tire fixed stars it in oner to find tle ile so ti rii iii a nh h desh dish ed idi lei gli git hude nude ude at sea for pelf tn g ib 16 rt jt of 1 witti ahat this ii s been doi e may be ihfe red from the i leo leu ev ik k 1 e words ot of delambre ho ii g on oil ih idi lum ioui vol ins s f absei s by M sk blile ile lip s luil the conijn tee ce ct of the pi j 11 st sei sti ia t cen tui y oL observes serves itha th it it by ii a gi iek iet eat eri tri r i ion ion lon the si 81 silences lences fences shoud be b 1 it st s rd id til th t fihs ihs ibs h 3 only were byed bared fored there unit te be I 1 liina ii eird rd in it iatridis matr rials idis nt to rear re ir alm aim hi 6 11 entile entire nw new edifice of cueni mci eln ein asami omy 1 the I 1 ubo ho esi cs lashmet t comprehends two r pinc i j i dj f R ole cile oie the tile observatory the biliet ibe the ti dv ele eke w 6 tle ile former folmer is ci low obio g 0 erect eraci un iced iced v est st aid did at d west westma m ih Mh four T I 1 ancil i dilts deits DI itS cd the tile ground flour hour in N bich th in lin it t ILI in port it s are re of 01 it m ne ie 41 t aliases lluise abich aich hlis ills liis h is a i itolle slop i g ri rn fitted bitted v k ili ill h sliding for colem chiem ce 10 ili in ot trai sits is the arilia t mati di nv i 11 t eight feet in ter ler length 1 on osk to stol e pi ilis aid interesting filin havn having g been d by the astronomers ro rodl roal a I 1 from the tile ay d a sot sol ot nalley bailey lo 10 in lri adi it tit t part p irenet meLt is the magnAr magnificent erit elit mulli muil mull muli ircle by tj olgh olph tori tort which was on ts stoie storie pier i r in lit 1812 ai at d it has bas hc s a ter tir ol 01 i i i ly evalt tei tel fel tt et such is the tle cic c cu curci reci mth lih rb uhl ubah u it has been leen n constructed consoni ted that its pc poi pol i i may way be to the ehe tenth of a sicco SK sao O d jn in the other rooms die other ciral P olid ild lid rid a variety ot of astronomical ts s well wll es ess a library libri try iry conta alny scarce s books it J is s hov hovi s i leond brond oar fir province to attempt a des desi i ion lon 4 the splendid and cn pi p cad c t d li it 4 1 11 1 it 11 lits coi cot t and within tile thi absi i 1 atory v b h th h we should scarcely 8 c cred ced oed in it in kig k i g 11 oie wie to the goeld greid reader redder lufte e it lo 10 to say sav thit the ib is si p t th ih of government a d ia is in ui ter ir the lda ida of the tle lords ct the adamu ity asli Asi onon r il it time is rot rc divided like cli cail ia alwo inia lito aito 11 to t tv 0 ri pr ios los of t tielve elve eive hours baj lut is is rom rou 1 f d rc ire 1 1 ily ly from irom eje ele oje 0 ie to twenty tu enty four N ncik vv it is is 4 i 1 P I 1 the mast important objects in lit aae fae I 1 ire lre hie lf the ibe observatory tory tery to find the th ti eine tine it e fm mf this is is seita selta si ined at gi greenwich by ac cirl ciri e dete rii lii lil D n ton teion of tile the places of alj vanous venous lous ious st ars drs and cind alir ti ir t i ai sit over tie vie meridian fiem frem these ois ovations he mean solar time me is con col li i u d this once known the finding of the borgi e ot of any avy place is 13 comparatively tsy cosy A knowle ki owie 1 e of the tr 0 time being of the torce ce if n keeli g gibe ethe the reckons rec koni y of a thip chip ship on a age the loro ioro lora of the admina adani il y determined dp a ut t ten years si aiice 8 bce ice ce on a m us 11 a for niu nit nicking king ili lii ii daily dally the hour of olle om oc ocl oci ock jck such ia is V t ft arkill displayed da played in the observations that tf tl s huir hour is now ascertained with jie he utmost r I 1 y and from the s amit of the has ni ii m nde ade de kilok knortz n w woh oh the greatest ii 1 j I the time the ue plan was waa first adopted every every day t C eve e minutes to one the capt ains aina of ess a in the ibe river within sight of the observatory may bp be seen directing their teles tries scopes towards a black ball slowly rising on a pole fixed on the roof of its northwestern north western ingle angle they then prepare their chronometers chrono chromo meters and keeping their attention loh ion fixed on the ball w which has become stationary at the top of the pole ie they note the instant when it begins to descend end at that instant it is one and A it will be obvious that the mariner has then the opportunity of knowing whether whither his hit chronometer ig is fast or slow he manset it to the true time and by daily observation of the except icett ic ent ept of tho tb ball lall asce bitsi ta rate of going goig gola TU thre re is an t ii in tb ahr bi ii g appropriated to it is the custom with makers of those instruments to se send 1 d them to the observatory for correction coi or trial their dalry dairy rate is hen then ben oba I 1 ved ived it j d not noi ed d down for the its use of the owners he the st m e course is followed with the of ships lyng in port visitors to greenwich park mav may frequently frequent il see a captain descending the hill with his timekeeper I 1 in a handkerchief under his arm the presena present n amber of chron ornit cis on ti bilal M ex c cc els s one hi midred midred many miny of them being froin from ships pod pud off and aid thirty in preparation i pa ration for the tile deter mill tion of the longitude ot of valentia in ireland another very important object in the institution 1 and maintenance of the observatory is is the observations of the moon and the I 1 airn lin vt of the altees of fixed mai wai s nece nice ne cestary for instrumental ellars ansing in tin tid SP observations i in lit the tile early history of the buil bull building din these were regarded as secondary but they appear to have been followed up with the greatest re regularity flarity even when all others were neglected ic acted the efti it ct of hib this his regularity is most honorable to fie tie die ii tor for the existing theories and alid babl s of f lle ile lie tile moon are ever everywhere where founded on oil the at greenwich which is I 1 looked locked to as ds that from which alone adequate observations can be expected and it is fair to i predict pi edict latt hile hiie while bile the duties are as efficiently performed as at present lunar tables tabi es will af al ways be founded on the same authority to seafaring men lunar tables are oi of little less tance than true time relying on their correctness they sail away into the broad I 1 ocean over which the calculations made thousands ol 01 miles distant serve as ginger finger posts in order to render this branch of th 0 b sere lations a ld I 1 m more ore e efficient til clent an additional build I 1 ilis ipg is b bung I 1 ajl erected in which the moon may be observed ti served through her entire passage owing to the construction of the portion of the building buile I 1 in at present devoted to this purpose one half balf of her c course ourse is is very ery J imperfectly td iW and one fourth is quite iott lott when the new part is completed it is anticipated that the observations on nir our mir satellite may maybe be made almost every nigh night at pr present flom from the cause ca se a above ove alluded to they do not exceed one hurld build re lil ill the he year ear some idea af the ce necessary on oil the part of the ob belver beiver may be le inferred from the fact of his being irad ired to watch from moonrise to an hour or more after sunrise or from an hour before sunset to moon setting of late in addition to the astronomical ca a series oi of magnetic and meteorological shave been conducted atthe at the atory for tor the observation of the magnetic I 1 dip and some other points which could liotte carried on oil ler i ier er the great magnets or other disturber disturbing it n fluen fluentes ces a small smail outbuilding hab lias i been rais rals ed ct wood the great greatest est cst care being taken that no pai par ticie of aloi should be used in j the cotis cons rut rution ion iun such is tile the delicacy and li lity tyous of E inhof r e ot the in thie this apart merit merity merits that they are suspended ly by ekens ehens of df fibrous silk closed in some instances within tubes ol 01 giss 1 ss I 1 these alt if s are arc prepared at manchester expressly elpi essly essiy toi the purpose pur post Bt the of seven semen or eight ullen when reeled offin off in rea rca readiness diness diners for lor shinn shinh spinning nig the slightest twist bould w rei rel rt i der them unfit ui nit fit for um and it is ts es sercial serit berit ial lal that they should he be of thickness there are arc three magnetometers magneto meters the magnets for which wele vei nei e made at they are of polish d steel each avio feet in length one out inch and a hlf in in width edth and ind one quarter of an j inch in thickness in n reading oh olt the results I 1 allowance is made trade for the presence of ironi in the appa i at atus w aich supports them or in other parts of the loom room these instruments lith with I 1 the ald and the wet and iry dry try thermometers are ot seivel every two wo hours houts day and night except on sunda sundays 9 the dew point four times e evely ery cry da the magnetic di dip p is observed on the fol foi lowi and aid afternoon of each of two day days a in ev every ery week on one particular day in evely every month previously determined for the observatories in various parts of the world and arid kno know n as a term day magnetic observe ob serva ia eions are arc made at every five minutes on one day in ech month hourly observations of the barometer de re mad made observations s with wilh the an it n sti ament for radiation or 01 tal fil H il ir rays are ilide nde ili iii de when v hen cir cu s ore are favorable and ald extraordinary x tra ordinary observations ot any kind hind ivi tiei tiel circumstances require them the indications of if the self seif registering instruments are regu barly preserved or read WE off the ralli rain gaug gang gauges S sie ar sir which are cumulative but not sell seil regis reg bering are read some oice once oi ce a day soine some once I 1 in a week in addition to these instruments there are an atmospheric electrometer a galvanometer and an anemometer the last regis registers Lers of itself the force direction and duration of winds wilds there are ate also self registering thermometers which are suspended from the side of the dreadnought 0 hospital ship for ascertaining the temperature of the water of the thames with the object of assisting the rgene al in the meteorological report affixed to his weekly sanitary report in astronomical science everything depends on the precision with which the longitude ora ora ofa oca place is determined ag as regards an any other fixed place by the transmission of chronometers chrono rono meters from one point to the other this thia maybe ascertained an operation of this nature is now in ln progress to determine the difference of longitude between greenwich and pui Pul kowa in russia As it is necessary that the observers as well welt as a the instruments should be inter changed bf astronomer at the latter place has come over to make observations s from this point for which purpose a transit instrument has been placed at his disposal the na nd 1 7 1 pui pul is i ueral y pru tp three ve ears irs in adva adval ices icis CP forthe for the benefit bel bei fht eft 0 of f lb hose hosp 0 s e u who oho ho go boig long iong voy ag agos ps the list ot of tars stura s t tor u r this work h has it a first claim in the astrom observation and it is a rule that each star shall sh ill lii be observed cd at least t twenty enty times in every three years bf Bs 9 des jes these ihfe thre are arc lations of sars s rs i for lefi it fiall id K lot i of ta til se akca arct a elected d tor for th the tho doo i cuin mating list ot of the altna nac or of those c cu n pared with comets and others observed in sul sui survey vey the sun moon and arid planets are observed at very practicable opportunity port unity the latter through all hours of the night except on sunda 9 when the moon of only ily wih mih y stars staig is pd I 1 I 1 occupations lations and arid the eclipse AI at i movements 0 of f Ju satellites e a catalogue which for scope arid and detail the highest credit on those concerned in i a execution the apparito iq i i attached to a pole SU 81 feet high hiah foxed fixed in i lie HA i i A wire con 1 necked with nith this is led ltd into oie wie or 01 the he rooms of the balking bulking bull bul hing king lag ing here where pith balis s s 3 ended near a bell are are ire attached to it when the he is excited by the electric stat state of the atmosphere mos mo sphere here bere the balls become violently agitated and striking against the bell cause a ringing which immediately attracts the attention of tit the attendant attends rit lit in time a well was sunk in n this garden feet in depth with steps leading to the bottom for the purpose of observing tb the stars in the daytime day daj time but this has long iong lon ion since been arched over as the improvements 1 in the construction of telescopes render it unnecessary the whole mass of |
