X-B\\ Ml<MHr^Jty\ 



U> tit^. rit^tt aM lit^- y*rjn U> iitf, l^ft, X20 



U> rt;('/>r(\ lit*'. f/at.t';rf) of lUt-, j^>*;riph*;ral va*- 

 ^rtikr U;'] durinjf it* t,ran.«jt. ''cirrrijb.tjnsr *liiir 

 W'}iu'u\ii*',). Ah nfffrtitht'jttiortf'A t\if', Ad^f-, or 

 xlij^ rnay U; f:ii\cnWU'A m a« to rt-:\fr(i*f^i\, 

 Wrtu(', krif/wn fraction «^/f th^r t<^/t,ail pla^Tna 

 vr^imri^, with a vj^?w to Jifnitinji dr«'r«jktory 



m t^tt', f^r of th/T li'/inj( rabbit hav^r U^^i 

 nUuiU'A (f^fj tftf: x-ffty fu'u:r<ii^/:(>\)*: for \)t',r\- 

 <'k1* lip to two hour*, aft^rr a *inj(J<; d«'/<'/; of 



"niffffff.rfi.kt ry>rr^s>'fX;fidjr»J( to on*;-t'ffith ''/f thft 

 fi^X'tmhU'A \>\h^:uin, voUiffX-, ('.'>% ffA/iqcj, hh/\ 

 \>t^^i \fi'i*'/^/'A into ty: Uinr^Miti] v«ri of th*j 

 c/fHirAnU'TfiS t-Hr. \)nnuit, thi.*, ftf^rUA the, cur 

 itmy \>t', nnh'ji*'/rf^A to variou.*, ^rsrf^trini^^ital 

 prrK^'/lurfr* .*;ijch hm trauma, fr^/:xinf?, or th^; 

 inj'-/:t.ion of itUh.rfnh/:oUfU)f:h\ ajf^^it*. Ar^ras 

 r/f inflammatory nrft-f^Utn h,fi<\ i,\i('. capil)ari*#, 

 th^jr'rin ha'/<; U->;n imaj(^'/i, a?*, w<;ll a^t sit^rP, r/f 

 art/?rial 'f\/^j'.ui tt/ijh/'j'jd to th^; \i\]nr*A axi^TA. 

 (UmP-trifr^'umf, nuWc/^i'w*', (4 \(><',{x\mA (i,ri.*-;rifi,\ 

 }>.fKi,>.{(t hav<; P^'-^^n rtvi'/trd'A froiu thh tim<; r/f 

 onjvrt, t/> thdr <\'\*it\f\)(-;tir,xu<'A', h\uK&.i an hoiir 



Te^s,, oO min,; later. Control micrr^grapk-: 

 ?\ifM\A be t^ken of both ears prior to reeord- 

 irjg a series of ^afKnilar events. Vascular re- 

 spofLse to vasomotor drugs may also V>e ob- 

 servr^ by x-ray mirrr^iseopy. 



LvTnpl-jatic vf:#is^;ls cran als^i U- visualize^] 

 in the living animal by x-ray micrff^-opy. 

 fj()iA r^-sults hiave U;en obtained by the con- 

 tact method, but t>j/; t^frrhnirral advan<^^^ an- 

 tif^XtixuA (iZ) for the proje«^rtion methfxl hiave 

 recently U^jn r^raliz*;'!. Suc^^f^ve x-ray mi- 

 crograph.'' taken shr/rtly after 0'-4/» rnin.; 

 th^; inje^rtir/n r/f contrast mtAhmt dire^rtly 

 into the sul^Krutiin/roiia tissu/; of the living 

 rabWt ear, show the peripheral \yui\)hn.Uf: 

 f^iipiWhry pkrxijj^rs aU>ut the defx>t ar^ra of 

 cor»tra«t mfAmm '^e.g., ,01 -.05 ml TTioro- 

 tra«t; a« well as the collc^rting lymph '^:hjan- 

 nels draining the arr^a ''Fig. 5;. Siirrh micr<^>- 

 lyrnpFiangjr^ram.s al.«^> show the U^d-like 

 silhou^^.te <^/f the valv^^; within the lymphatic 



f'/o, 4. X-ray rriicr';<cra(;h p.\urmuv^ tht; \ouvy 

 tii/linaJly iiinixmt-A caf/illarif^ within thft ((r*iat 

 auriculair n^rrv'; of t,h/; fsthMt,, 'Hi/; n/:rv'; li*^. paral- 

 |/;l to th/; cj'.uU'A ',t.Tl.t;ry , afi'l j('V'r». '/ff »,fnan 

 bran/;h/;« to ri((>»f, and l*rft,, ft, i* druinf'A by a/lja- 



652 



