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Show P f The Problem of Under- ground Travel By Erederic J. Haskin. j WASHINGTON, D. C, Dec. U.i.'n-derground U.i.'n-derground travel has met with a serious difficulty and it cannot achieve t he great dex'elopment which it should have until that difficulty has been removed. Perhaps you did not realize that underground under-ground travel has a great future. As a matter of fact, travel through the earth is second in importance only to travel t h rough the air as a future means of speed i ng up transportation. We have long had tunnels through hills and under rivers, and these tunnels have gradually become longer am longer with the development of engineering. At present pres-ent tunnels are projected which would have been considered impossible not many years ago. The states of New York and New Jersey are getting ready to connect themselves by a tunnel eight thousand feet long under the Hudson river. Pittsburg Pitts-burg has made all plans for boring a hole nearly six thousand feet long through one of the mountains which ma ke travel so laborious in thn t city. Many similar projects exist in this country coun-try and Kurope. In Chicago they are pla lining to have tunnels under some of the busiest streets so that the heavier tra ffic will t rax' el underground - while the light vehicles have tiie "surface. Tlie growth of heavy motor I ruck lr;t ffic will almost certainly make such txvo-stoiy strcets a necessity in all large Jities. In a xx'otd, the tendenev Ih for traffic to burrow underground as well as to fly in the air Put noxv ail these projects whereby man proposes to rival tiie mole as well as tiie bird have been held up. The engineers, en-gineers, after a little figuring, have readied tlie realization that, -while they can. build tunnels over a mile in length they cannot guarantee that modern traffic traf-fic can use them with safety. If a long string of automobiles enters one of these underground chambers it is a gamble whether tiie drivers of them will live lo the other end of tlie hole. Kor internal combustion engines generate gen-erate carbon monoxide, and carbon monoxide mo-noxide is a deadly poison. A good manv men have been killed by tin's gas as a result of crawling under their machines when the engines were running. The saint sai-nt first intoxicates, some w hat a alcohol does, and then kills. It Is generated by st.-am engines and is the i:an or at least the pt in.-iple of gasl whbh occasionally uv.-ivomes pase iik '-rs hen train." are suili-d in tunnels. The Pennsylvania railroad, because of this pa.. noxv ns-s el'Vtrl'.al t ngin-s in aoiucr .through tlie tunnel just outside of pa. ti more, which is an especially iur.g and badly vetiti- lated OUe. Now ' p. is gas can kiU a iv.:ir. ''i a ii ; ra ie with one rna'-hine, xx ha r xx ih it do .vhen Kev.-ra! t hous-aral n: a. -bines are e i-QV. dod into a long t:nu -rgror.ri chamber? cham-ber? P is e-:i:i,atf d with regard to the pp.pos-d m-v.- Hudson rix er Pirmel that ox er t '.x o thousand machinee ma-.' 1 ass ti ro-:':) ,t xx'h.nn an hour. No oi;e , an nov. s:t y po.-d- : .-lv v: ..ethor P .- d ivr-rs of tl. e ri!H"i.!!;.-s would survive or :'-t. e or i , o on l::iov.' s i io w i.. h ar: o:-m.t:oi. o:-m.t:oi. a a -i In gr.e:at-s; the a:uo'int var..-s a '.'.rd ! !; g t- h.-ad,. i. . an.::etor adj :rt-.-!.t. and v.-a:y otin-r (fa Ues. A:.tl r.: odv U:.os l.Oxv rrct-.i: t .irVr.v :r.j.a..;:d,- a h.-.m.an hem;: an V.ir.d w;'o':t he- r, :u ! r.c dr-.::.h or -iy;;.i;. 1 n::i th-.-e :h!ni' ar- :'o.::'.d c:; !'.' s. ;.-nt::': tvst t..e rocriSr of unde! -;nd travel is . h- ked. Ti- !o".js ine.-r-t --or.: er-r-d wi : ' i ' i-'.::.';jr.g n' t f:u:i-is Va e n, - !r-'.i'd t.. th" h-:--. nf tor ) - p. j Tl'.e h-jr.-av: :i iiskmp concr--- for a ,.!:.! tboia:.d do, a: - n ith x M i: tr ! - ar:-v on t. s:.s a:.d ne -.r.tiu e :t ar- j tancir.i; v iPa Yal i:v.-is,t" to -.e.-m j '.ho t om e : ri a s,n . :am--?- -.xhi. h i i :;:.:.: it x. hi ere t .i:;.t P.e b :r--a .: v,hi r-nl. ! T! bar. au of 5 is f.t n. x i.i P.- cu::irv u'.:ahfei to e a 1 e Ih. e ;. ts nM' !; hn de' ot-d liv:r.'. att.--'-p.'ei l i the q'l-s'.'.n o! po:o;i gasrs i:i tr.lne It a 1 -o did a lar-e pa"t of t : a w..;k :u tonn.- V.ou X'l'ii P:io ukc of ni'd d t ' r, iu: a 1 ; ; ( .1 nu is. s t: u !.:". !T P'.e t wr. I'm- of its :i':s's, . , '. F.e'.d- . 1 -t ;, hail v. ha ; t . ,;a-i ma k i:, f-sP -j.,; - t.oi' ii 1! St.tr the u.ra:..i l the r..., :i ch.: f-! f-! ;r n;;-.:1!,,' ( r tla- cie ': . . n . n f of a:; 'P- Vr.t Ka4 :-as'-x. Trr.- r.;:i v;'.; !-'-a:K-' f"r tie bv-rvi f.f Po- . ; e; 1 r.X i It ii r- ;;ir d to Pmrit ! a - c; I I 'I:.-! -:r. id l.el., n .i-v!- iM wh; -h I ! . -rah.- P.i. f.-v'5 a: -! it ph . oloc ; t to I ':d th-' .''t.'t'ls o' t..e ease-, en p e j han.an 10 Ibv.h tf lh.-e t xx ; ' ", 1 b f :r:c.h. d V Yah- vy.P orit I -r Ya-.d" I He;;t;. r-'.c., M ,,V,c pmVc !, I xx I"', t- to ..'x e p-o prolce-y of h w tc '! a r ' -:'. :i o;.rv !de i h.uman in .':g I can utali-l 1' ' p' o. .-d ; : . c:t lire-1 is . rv fdu:plr Tt-. C.s rx.b. r to ! ihh'M ! t !':.itv an i al'.i:t t x . 'e Je. . - -. and w.; a:;--!..-!i ' eu .-lo-ed. Par, .r n'l si'it-i x'.;i !- t'-lvcn Into .-'re,'-. Pr- and t an ::;.!" ail sort- of e.:ah t -,omv a1-! 1 : -ill ?lvn b made to u.-.-r-m:-e I o n ; .it e . -e 1 t ! n ; r lias P, , n 1 ohutrd bx lit. ho;, m.onoxaio and b, o! lo-r 1 ois.cio',,-; -,,r rv. SPePnf.. -A;'i then he ,,,'V.l uvom as- 1 x oivmt n ,i evt.-r Pe pOion i:: t'-aie-Per hi onii-r to d.Merinlne tiie . f P.-! v ,,f I I xario ; n;',t'iie4 o' alr u-id n:e,,-i on t'l.- human ('cm. It n-;.v ncrnr to m;, '.hat the--.- pr-,l-t, i-.lv ' Pr ro 'u ' 1 of op 1 nt e.-r for 1 h ;i d m x . The r-uiph'Pm n tlx- ex en nrisr t'lMt t e e-lePu',ents e-lePu',ents x ol coin. to an end for lac'; ,f hun an nuitr-'ia'. Put, the e p--- u e : t v.-em to lue o no doubt s on h'v p,M;i Of c , t'ex" x 111 Viry ell -rf-d'x Sa'.--U'..;i"i Pie vt:i,i,'His from M-viciN Inlorx. 'id ti do. y "-em tn have been pi,..-.l that xoj on' re; for i'xl'friurnl oxen xx !:'"! qU it. da l'.v;ei'C',l. c :, a 1 x a S be found Pi a iio l r ion t o t e-t m upo:i 1 1 m 1 e ra . P nali-H. l.o-ie al.s.t be e pe r i ; 11 c o ; .( x' H li lue -.e.-i ,iml e.'-prciah - x 1 1 h xx i inP broken hotc.i. Pr, Henderson saxs that the ;t, calh 1 x hid - broken hme nmi'U fcnffet om lii'art disease and is apt t. die ni" henn faputc. Sn.'h .1 hoi.se uli;ii, be especially liable to be ox rrcom. h- carbon nun..Ule lien pie seh-mPts hax e determhe-d xx hat percental;' of c.i 1 . boii mi'iit'V id e In tie air can s a I r 1 he Pteath.'d by all eldeltx and x 1 , , P 1 , e n horse t h y ca u re-'oin ute nd t!:a t mi t vn e a s -a iV tor :1 n .-ne. Tlte eiu;1ne.-is x ho haxe rbftri;' of (he ! x nt tin P011 of Co tunnels c:in coiupule xxill, exuctii udc hoxx much air xx 111 floxx tbiom-li them. The eperim.-nls xxih Inform In-form litem hoxx much carbon monoxide ma v n:i fely lir mixed x ilh t hn! nir. and hoxx niU'-h of Ihn deadly mis Is piodiiced bx- t b . 11 X el a r,e machine under a era :;e con. Ill Ions. When IIiIm data Is In (heir bituda tbex- xxlM b-dn to btd'd their Inline Inli-ne h;. Man's 1 1 a els underground xx id i;o I or xx aid ar.atn. |