| Show artificial A 0 r I 1 f acla L st simulates late 1 OR U S ca N 0 ab it I 1 A alki I 1 A 0 41 b BY JOHN DICKINSON SHERMAN N life ha has learned by experience that it must eat to live cir cuni niter alter cases it m e er I 1 he lie bear which aich I 1 bernades ber nates durin daring g minter the winter las up no do a 8 ore re cf of food and ile je lla its time thue to get tin fat before holing 0 up for lila his long sleep 1 ahe he wulf ulf which expect i to kill the year round makes n i pru pro vision for the tile future the elk o 0 exi ett to dig alin uh the rn wnm w for tila his fowl food the inid follows the seu eons on the tile other annd the beaver an in aquatic animal mut mu t hae hale green food deepen deepens bis his pond so that it will not freeze to the buttwin butt fin and be he can aim 1 under the ice lee to tu his pile of u pvn boughs the cony of hie lite Ito heckles ckles build builds his ietti haystack irbe squirrel hides bides nuts and land cones alven the century d g which never goes hungry still burie buries hi his bones man has the same instinct to lay op UP food r the needs of the future nut but being trw a he looks LAs L As further ahead and oleu also experiments with kinds of food and elih nieth methods of log 1119 them bu so muo man has figured out that at the pre tit rate of iacre increase e in population the world W rid will be eo so crowded la in the tile course co drw of a fam centuries that ir its nil alit have to hustle to get en high to eat eal 71 therefore e the are busy devising and me ule m 0 t meet the coming food shor shontae tae nou no a scientist without an ima inn tiu Is 13 not dot teorie his gait lie ile adit ilta hat that the population of the united states ha has I 1 awn ven d don nibling bling ilela approximately approximate proximately Y fery eory thirty yeara years and at tit thi this rate of In crene we will have people in les less than one him dred eara uni but he auks asks what of it and he goes en oil to td paint a picture of life in aa kin kiderlen erlen a few hundred yeara from n nw HI its unlike ours furs now nov as ours ou ra li Is unlike clial of hie lite prehistoric p relli cliff dweller Diel lerv of mesa verde national park in colorado in this life lite he says t here bo no millen no lining dining room rotin no milk nian n rui iceman no market man nu no no coal lealer flealer ami anti 0 so o on there aill be a it super atton ilon of food supply bent heat and 0 llam and light will be lent sent by rudl from ruin generating at ati 1 I alone I 1 the he problem of trill mill be soiled Pl then there aill te I 1 e in ito lip 1 sleep will be merely u luxury I 1 lip short 1 will ill be a with everything everl til I 1 ng to be had ll hr 11 nc 11 button offhand tills founds a 4 bit farfetched far fetched but with ell all clence science Is doing thes e daye days fie Is a darlne daring man who cofas coffs for 1 won orli lers ilera tune ila e already ill ready been accomplished und unit the attili activities I 1 ties of eri art enca are take for example merely the of application of it it to 1 I 1 ant life ae As elioca by experiment experiments still la 10 their infancy or 2 qz scientists of the united state states department pa part rt ment of agriculture by the use of artificial light have entirely upset nature a normal schedule they nine hale taken old plants approaching death and made them lower flmer and fruit flowers 8 that mourn in the spring and fill have been made to blossom in 11 inter dwarf haic hale been made to it gra row into giants and uce ilce versa tersa rains bale been made to produce several crops a year one of the photographs reproduced herewith herc Ith show two yellow cosmos plants of the same aye age the little one wa uno raised on an eight hour light aty diy while tile the big one had find fifteen hours of light 11 says allys a pres press bulletin froni from science lRe lence sen serille ice washington in part thee these startling tart ling upset upsets of nature normal schedule tche dule suggests uR geel a wl adry which challenged belief tt yet or dzu ra W IV V garner it A allard Allaro jL and it A steenberg Stein berm who have actually performed three theme miracle miracles make no wet secret of their they merely i 1 control by the u lase of artificial aig light h t the length of the day days la fit which the plant plants grow at th the new banding building of the national academy A of Sc Sete lent neeS in washington the t he department ha has installed an exhibit where the public can see ee th the expert ments tu in progress behind glass window windows in a large 1 metal cabinet hooded flooded with light from high power electric lampe lamm the responses rei ponee of bartous 1 planie plant tu to different period periods of illumination ar are demonstrated demo nitrated by the growing 9 tor plant plants this clearly demonstrates demona not only that the length of the light period 1 the chief factor ID in determining th the character of f plant growth but that light can be gumns fully sub at for natural daylight when a incle plant hows shows the char growth groth gro th of two different dir sea ta sons zno on operate separate branch branches the won der widens in thee these experiments a partition II 11 placed between two branch branches of the gains chort aho day plant pa ant one side eld if in exposed to a long day and 1 he other to a short period of day ight the branch on the longcay long day side continued to TOW leaves anil and branch branches characteristic character lette of the youth of th IT plant in nature the th branch on the th hort abort day aide side blossomed and entered upon old age ther there ie to a practical application of the heat discover by the use of arti artl facial light related plant plants with differ ent ni daylight period periods may be made to bloom at the arne same time to go that plant pl ailta br edera breeders can cross them more alore imar tant lent still till the work of plant hunter hunters who earch search distant land for tables I 1 a bles and fruit fruits which vest may be suc ce cess cerully fully grown in our country will be mad made simpler and more certain lett tati tude determine determines the daylight dar light period and th the similarity or difference ID to the annual cyal I 1 of daylight may sho abow w whether or but of plant plants are ul table tor fa r introduction in any given latitude apparently it aill ah not be lone long before meet most of our out hothouse blo blossoms and especially our easter dowers flowers ore are grown under leatric lec light ealter east er as its elyone er exter yone know knos is a variable r date and tpring spring sunlight Is an fill uncertain quantity ana and he the florist must have bis his blossoms ready exactly on time tl ne or lose his market at any rate the commercial tic ability of practicability forcing lowera an and d bring ing them to bloom on schedule sell ebule time 1 was 11 by a I 1 campati com pati ley city the p uter the ua I 1 I 1 urt were 2 moor alto arft ca 0 week 1 ian hutt 4 4 2 I 1 antl IK t with b it to 11 ile the a ilk a d both rid arti fidi about iab bt of harkul re d I 1 pots I 1 lif fi n 1 le I 1 t n in ry I 1 the be a if in grow devo unit the col J in t hen IN the C d t 2 rol a 1 I thi 1 to by J ki t I 1 it t I 1 der COO WO watt mazda lamp lamps la in all ors and the other half ta nearby rby the conditions were fidei biti tain fain was placed bell between ean the t alli sections and the lights turned ledis I 1 five hours every night ner IN t er plants single tulips bloomed to W to IS 18 daj a instead of the oso I 1 adi 34 weeke hyacinths in 17 daj n of 3 to 4 weeks daffodils liaw in it instead of 3 darn dara in tulips la in ill i instead of 4 to 5 weeks and so OL ac eiery case the plants under tl were ere far more vigorous than I 1 not eo so treated figures showed that the d used cost approximately IX a ral or an average cost of 1 cent I 1 a day the space lighted by the tl IN lamps ans 91 square feet TW it sufficient clent for ten inch pot pots of ud at an average sales value of P A plant or a total value of I IQ Q A remarkable tests were 1 1114 on OU growing plant pints entirely by y i I 1 light without any daylight in I 1 el cases the growth vias several seven t greater and more rapid than 09 f the same kind of plants gro grow daylight alone tests were B MI subjecting seeds to X ray 01 planting in order to determine it V X my rays can be used to overt I 1 diseases or insect pt pests W witti lm straying yng ying the plant tissues or 01 it tl itself it waa was shown that no I 1 facts resulted from tills this th in connection aph these t so lessened labor the increase ill art house turnover end and decrease 1111 on coal bill should also so be taki ar consideration the university of chicago 10 department has a patrol I 1 vision with a complete laborati der prof IL K unk link for the tit plant diseases in relation to it and shipment plant lat 1 of the he youngest of I 1 ml sciences but already it has saved w pit hone ilona of dollars to fruit and anti it gro grower and shippers I 1 b e ar d cago perishable food 11 frum from south water street it its W home IS I 1 like likel to wt t fully equipped laboratory for tot 0 it study of plant diseases it Is reported that sorte some rd re in things eoon soon to be made me been disco discovered verc a at tit the W V R 11 eon son institute in new york etsil st ey i with ith the I 1 1 ed to experiment jo light heat and moisture on oil 0 P I 1 b that man roan may not starve b j |
