Lethbridge Daily Herald, The (Newspaper) - November 13, 1919, Lethbridge, Alberta
EWorld How is Now to Be Charted from the Upper Air by Auto- matic Cameras Thai-Assure Greater Accuracy Than Any Ground and Thai- Will Lay Bare Lands of Mystery. An Airplane Camera with Pislol Grip. Hand Camera Operated for Aerial ..Snapshots. wilj IK; nV.idr from; ihc Inalcr-d-iff di'cu'prmg tlic' sur-. veyirV chain up hill rind down dale thj wapmakeiMvlil covi-r.tlic country, at a IDO.inilc- an-hour pace or letter.' Aero maps cost but ;i fraction o( tlio olJ-fasniohEd besides hav- ing many other It is ertimntcd thnt at the present 'r.ile at which ninps' arc made it will lake two centuries to complete tfie mnp'pinr. of the world. Tlie aero niapnialicr cnn do 'the work in 20 years ar.d do it better. pei-sons rcoliM.tlic .task which confronts the surveyors nml mapmakcrs. The tctat lane! of tlic globe, including the arctic Rnd "anfarclie. regions, is about square miteis.' After centuries knowledge of half-of its area slill remains very .sketchv. Kully: square miles arc entirety unsur- ycyed anil unmapped. 'Ttii1 iftftS wilt odd vastly to knowledge of world geography will aisial..ir'i tile development of land in many ways. A Product Df (he War Although the new science is very young i'. lietn established "on a firm scientific 1-asii. The aero map ir. distinctly a war pro. duct.' Under lha pressure, of'necessity the new science was discovcreil and developed witli fevfr- ish basic. In time pence it would hnyc re- quired several years to develop ncro maps and the machinery for making them; whereas, war pressure accomplished the work in a few months An entirely new branch of photography hnd to Ire developed to make the nero map possible. A and Ihe Miami Iliver Tfrtrii Airplane. ji'r gss? ;iSS i A >f. Miami, nnd Yicinily, Aiijotiialicaliy in Sections and Together.- The best pre-war cair.ei-as could not do the work pnd new and complicated nicchailiems hud lo be invented and perfected by _ The principle of the nero map is very .simple. It is niailc by photographing the earth's surface front a considerable altitude. mechanical difficulties of the work, however, arc very baffling. A map. even a sraall one. be mod" up of many different photographs which must be matched together with mr.thematicnl at- curacy. If a very tridinn: niiitnkc is mr.de in am- one of.thc piaurw the aliKiimcnt of roads, river'j iind boundaries is confusid and the map is worth- The pictures, hundreds of lliem, must le (nken from exactly the .'ante altitude or they will not coDibiiic properly. The Camera 'Che caml-ras cnnsiructed M MuSi work arc of ingenuity. In from n grost altitude the opcrntors found entirely ncv problems. The atmospheric plavcd .iltfccr.prnnkn Hit piefurcs. A phoiogr.inh taken froni an altitude of 1000 feet might be' hazy, while made from nji altitude of n mile undov Hie same might prove vjcar and distiificlJ'The most expert photographers of several eounCrlds worked tirclcasly nt this !em, Jfuny lives were lost in the work- It is no exaggeration to ttate thnt the ,-icr.i nmps often decidrd Ihe. issue of (jrcal battles nnd in Ihojprent world war. They servvd m.nny inclhods' of wilt: fare. The fearfjis air rcoiits not only.nv.ppc.t the entire liattloijinc 'nnd tlio ciunlt-yjying 'be-, hind nmps up to date. A con. ilnuous-, pholOJiVi'ph map was for the Directing liio battles -which Ihcnvvirtitullyito look.dii'Mity.xIcnvn the, eijcniy at nil firaes. These maps were cor', lectccl.by new phoTographs dny by day, no that officers could baiinformcd of .the inoynnenl vl enemy the preparation The Mail-Making Automatic Camera in Position on Airplane. In this case the negatives nre or rt- duccd until they are on exactly the Fame scale. A skiiful hand is required at the wheel to keep the eirplanc at Ihc same level. The aero map- maker flies bad; and forth over the area to he mapped in parallel lines just as farmer mows a Ih-ld of grain EO that nothing will be overlooked. Staking the Pholojjraphie Map The number of plfotographs required arc e.-ti- mated according to the Epcccl at ivhich tile air- plaiu flies. The c-amora is equipped with an in- genious device which may be set to take a number of photographs per second or minute HH desired- The film is fed into the camera tnatically. Since the. camera has hccn ap and adjusted-all that remains to be done is 'o ily.rr.pMlj- over the area to lie ninpped. It-may be to take hundred's of photogrnphs to prepare n single mnp. It will bo seen that a paco of a hundred miles an hour or faster makes it possible lo cover an immense amount cf territory in a very short time. All the photographs are taken with the cr.ni- era pointed directly down upon the eartii Le- A Group of.Map'MakinK Airmen on .Machine Erjuipped Tor Charting. of new fortifications antl other invfllufible infot- I'.iatioii, Now lhii[ ilic wnr Imppily ifl over the ocro hup is uoine Quickly ntlapttnl lo scientific rtud commercial The first nero map io be wade of Ififgc regions in America have been prc- pnrcil EolcJitr eiv men of Iho enmpg nnd reset- 'fhc pcvornincnt is already plnnninfc' to employ Iho ncro on n'lnrgc scaTu in mnriy parts of (he c'nintry for a VftrMy of Within n fc-iv monlhr. nl most the nero mnpj will tf- made in connection with llid exploration of re- id old Thc aero piiotc-xraphcr lo n fixed tlcvc- lion And to pliolojjrtipli the ground be- hlrn while flying1 fit exactly tho same lioigrht. Tf he phoUld fnll into an nir pocket dr be suddenly up by Jctl JhVphotOfirapfi'a'ijy not-milch. ncnth. The camcrn is liung rrpin the side of the nirplnnc car or placed in the floor nnd EO ndjust- cil thnt il will swing Lo A vcrliclc mnltcr what nnglo Ihc nlrplrtnc may nssumc, K the pictures Rte tnlicn cvon nl n sliglit angle from the vortical it will lo preparo a perfect map from IhOm. When the negatives Iiavfi bean Jcvclopt-d and printed the f re I ion a arc mnlchod lojrclhcr with cnrc. The nir photographer must bo cerlain that hij pictures will overlap thoy arc placed to- Hclhcr. It is much to photograph a" Iwicc Ihnn not la photograph il at nil, 'The niojnic formed of these photographs iriust be, I nmtchcd ao carefully that the edges do not appear mihe (Inishod picture. The work is surprisingly Accurate. An mnr) of n great in- Eluncc, rhadc Up of scores uill tlio slrccts in perfect allftuncnt tnd tlie street intci-section.s- at exactly the same as in the original. With a map of this kind it i? possible to triangulate nnd calculate distances vrhh mathematical accuracy. waicnvay5. riic Dunacrs 01 raiironcts, canal irrigation projoets, in short, n yrcat variety engineers prefer lo work fioni an aero mr.r, tti any other. A division of aoro nnd Mjr- makers has already been organized in the Haw department and is doing excellent work. Men wniCJi loiioivt. LOG OL lypc1-, of nirplanos for tbc work nrc carefully teslecL Other exports arc at work ncv; forms of cameras. A few years will doubt! bring about a ucvoliiljon in inapmakiiig due io the airplane. A New Surgical Method A VERY important, progress in surgery is'on- roiir.ccd in Fmntc, ip the tTiscovco' of a method of performing any suiptcnl jiaiiu On this new method, Ilic principle, is to malic the palicnl iii- stnsiblc to pntn, but he does not lose ccnscious- II is n principle brought out Ecvcnsl years ago, nnd this nllowcd of innkin? operationa on the lower limbs and Lhc lower pnri of ll.c body wUlioul p.iin, by injuo- of cocninc or Ainiibr BulisLnnzc into the spiral .coluuin. Bill Ihis did not pro- duce ihsensibilily in part of tlio body. Within a recent period Dr. Le. FiliaLro 3TK- in innkinff the entire body insensible by thc use of n single injection, and the liquid conies In contact willi the spinnl column throughout ils whole sxtent. makes use of nn injection needle nnd n After purgntion the day before and nlso nn hour before the op- eration, h'c rankcs. the injection of the liquid. which cocaine or other substances such as tulphalc of strychnine nnd tpnrUinc. The prococlure is described n.; follows in the Scientific American: The patient has his cycg bound EO ns not to be adcctcd by external move- ment, nnd lie sits on n 'tnblc with his legs stretched out before him. The application is mndc nt Ilic lower end of the spinal column, md upon Tnaking A puncture, the liquid surrounding the spinal column' flows out. When n sufficient am6unt has flowed, defending on the degree of insensibility' which it Is dciircd to produce, he Applies the Byrtnue'with Ihc cocnino or other so- lution nnd pushes in Ihc contents. This action is repealed several times, nnd operator obtains a'properly regulated mixture of rocainc and tho spinal fluid. Tho Insonjibility of the lower part of (he body Is almost instantaneous; in the trunk and in the arms and head it. follows nionienU 'aflcr. Then the patient is in R condition (a undergo aj- rnast nny kind of sufsical operation, and iritn- out pain, but he remiius conscioiu.