| Show FIC MISCELLANY A tree trunk of ot solid basalt ha Is I tho specimen to which Mr Ur It I II 1 of tho Hoyal society of or Vic Victoria Victoria toria has called attention Ordinary fossil stems calel have resulted from n a slow replacing of or the wood by I mineral mat matter ter hut It seems eels that In this case IA HIP trap must have suddenly closed 1 about the tree shutting out Olt the air and the mold mol formed on cooling must lust have been heen filled by a 1 subsequent How 10 Experiment has ha shown tho Iho curious fact that oil 01 on the surface of mica re reduces reo duces duc the Insulating power Ilow r of or the latter Inter for alternating currents but water ha hlll no effect All l kinds of oC oil 01 gave Ie this tl same results as ns did dl also Im Jm Immersion of or the mica Ilca In oil 01 Cement made from slag Is stated to havo hao remarkable tensile teu le strength md resistance to compression lon lonIn In n I for tor making It described Ile by Hitter von fOi the tl Mag Ial Is II ground groult Into sand sund and mixed with limestone slacked limo and the mixture Is 18 reduced reduced ed to powder and made Into bricks with wih wilier water After Aler drying In the air these bricks are burnt Into clinker In Ina Inn a n special furnace the clinker being heinl then stored fl weeks before being belne finally Inal ground The for tor which the botani botanical cal name of lias hern proposed Is 18 nn an edible tuber luber of oC the Soudan ro fa which M t Cornu has his just n resembles the I potato with tho tl advantage that It cnn can be grown In a truly climate Probably the greatest diurnal temperature temper range on r pr Is I reported by hy M l a n late lite traveler In Mongo Mongolia lon l lia The temperature at lt was at 01 In 6 5 am nI Ind at nt noon oon It had hul risen to IOU degrees degre Te oC carles ore nrc stilled stated Tie by M to number five Ove species les they the cause decay dem on being experimentally Introduced Into n tooth The elephant peals pellis of ot I lt nd ore reported by hy Mr It n Hall to reach rench a al length of or 2014 feet teet and nn on estimated tel weight of oC 2 to C tons ton These remark remarkable able animals ore are being rapidly exter exterminated Led by the thc high price of gum lm arable to feek a n substitute and n finding dex trine a poor adhesive agent alent n II German chemist t has experimented with ordinary Blue as lS a 1 source of ot mucilage The disgusting odor and ani ready renly putre putrefaction faction or of ot this glue ore are due to numerous Impurities such Auch as lie al III alkaline kaline phosphates earths acetic acid salts albumen meat ment neil extract fat tit and Iron salts Purification was 11 n tempted by Jy means of or hydrogen peroxide sulphurous add lIed etc Very successful results were obtained nt nl last through the simple process roces of or dissolving ing 2 O of or glue In tn boiling bolinA water Wlter heating the solution over the wlter bath for tor 24 t hours hous with a mixture of ot 10 0 of or barium peroxide and 5 I grammes of ot sulphuric Ie acid In 15 grammes of ot water Poured off ocr from the barium sulphate the clear liquid In which a C little sulphurous acid Is l formed Is II the desired Its Is cost Is II given as about four cents a I quart It I In If 11 to excel gum amble In tn adhesive qualities and odor while It remains liquid ualle for months and 11 never nover spoils Bolls Pried upon glass plates the product Is 18 scarcely oreel to be distinguished from sum gum arable The rivers of oC limestone regions wo we arc told tolt are arc gradually becoming sub subterranean lre Since 1719 It I has II been hen known that the Danube loses losel some of Its 18 water through underground fissures In the tl limestone and In 1877 water In tn tho river r lr colored with wih appeared t hours hour later In the springs of or Anch near Lake Constance Cons lance Part of oC the th drainage draIM of or this trent river Is thus shown to be passing Into the valley all 1 of oC the Rhine Proto Prof lenek now nUr predicts a II steady In Increase crease of ot underground drainage with the th final result of ot a dry My valley nl be below low tn and the tM plunging Into the earth of o the river from above obo The In and the near Trieste have bae been 11 already cut off oC In this way In the Prussian lan Inquiry Into cancer It ItIs I Is II hoped hOP 11 to 10 learn whether the disease ls Is Isher hereditary her or or connected with wih Indulgence In In alcohol or tobacco with other habit physician or wih any alY IT cian clant Is asked n to record his experience An supposed to have hae been choked dead deall and with wih the string still around Its neck has hal been I en found alive after fourteen days In on Ice Icebox box nt nl 0 to IS degrees F FIt It 1 Is not easy 0 to wiy fY What one would we pec t to find in tn ft 1 coal coni fifteen months after it I had hat been tightly clo ed to a 1 Ore lire The conditions In such n mine have haI been brell lately latel told tol by h Mr lr V I IO 0 O a n h engineer who reports report that analysis showed how cd the air to consist conist of or 84 Siller per cent of nitrogen 12 1 pet Jt rent cent of or and 4 per Iler cent of car carbon clr bon dioxide Ild that these gast were go sO d that al out feet trl escaped from the frt borehole In tl hours houn The he seemed to have hare n preservative rather than Injurious effect bad Im cooked ld bacon remained freih In had 1 not nl ropes and rails rais had not ru t J clothing had hOll remained dry dr and timber Was nl unchanged Decay Dec In the Ihle time was wu less INs than In tho three months following reopening The whales food foO capacity lf II startling In his hi n v work ork on whales Mr lr F K I states that the stomach of ot n t contained lO beaks if of quil and a grampus hall had 13 es 1 11 neals II nil 11 whole and Intact Intact The lanes In the stomachs of ot tome ome whales ue re to te the same 11 purpose ns IJ hw of birds gizzards The Oft l with wl n super heater wa bull bul t Stettin two yean ngo and at al once proved so successful that a second of oC the same kind was built In his third machine the enl engi engineer 11 neer buit A has hns been blen able to make considerable Improvement Steam ut t IQ pounds pressure Is l heated to tn degrees K 1 and It Is I claimed that with without without out any alY Increase c In the size of ot the boil boiler bol er erl there will wil be an Increase of 33 pur cent In horsepower with wih a saving In coal cOlI of ot 25 per cent and ant a n reduction of 33 per In the water required d The rhe superheating chamber Is entirely with wh withIn In the H I Is l tilled with a n anest nest of ot 60 GO tubes of 1 Inches outside o diameter nn these ore are heated by b fur furnace nace gases led through a II tube Pure dissolved In benzine Is IA a new test teat for metals of great delicacy With solutions pf r cop copper per cr salts It I gives a n line le violet Iolet color which Is not changed by of or potassium Alum Balls sas of or mercury give cle a 1 dark blue tint tnt i Ind salts of or Iron yield a n pinkish color which Is turned brown by hy Kven cn 1 part of oC ofA oCA A substitute for Cor asbestos suitable for Is made by precipitating I ing magnesium salts s ls with |
