10 m:vi:ii. 



EXTEUIMKNT IH. 



A piucon of full ago, with rfcliil tPiii|U'raiuic 108°. 5, wiih ploccil in a Imx (irjO' F.) nl 1 1:42 a.m. 



At 13 M. il liuil convuUioD, fulluwcd by |icr!siMtciit opiHiliutouus, wiili euinpli-lc uucunsciuuMirM, 

 which imli'i'd hiiil iM-i-n luurly cuinplile biforc the cmivulsiiiii. 



12:2 l>. M. — Tlic pi|!:<'»i> wuH ttikeii uut, utterly iiiicuiiscioiis, mid ut mic- time I thunght it wu 

 drati ; thiTo wiTu only n fi-w (,'nHp.s at loiif; iiitcrvuls. I plunjfi-d it into u tub of cold wottr, and kept 

 it thcri'. Its ri'*piration hinwly iiii|iroTcd ; but aftiT it imd bfcn in sonit- three or Tour niinutc8 it had 

 a violent eonvul>ion, ufter wliicli for u while it nfriii" appeared to be dead. It however ^l<nr|y pot 

 bc'ttor ag^ain, and in about fifteen minutes was taken out of tlic water and [lUt in the air. It vtwt 

 now iK-rfeclly consciou.s, and brcothing slowly ami reijulurly, but wos not able to walk. In two or 

 'three niinutea it wuh able to pu.sh itself rapidly forward with its feet, on its breast, but wu.s unable to 

 raiHC its b<Mly from the (ground. Its rectal temperature was IUU\ It was now left in a bai>ket at 

 1 P. M., apparently improvinj;. 



.\t 2 I' U. it wiuH founil dead, still warm. I saw the body at 1 r m 'I'liere was general rigidity, 

 and the blood was not coagulated anywhere. 



EXPEKIMENT 11). 



A full-sizcii pigeon. 



RK.MAIiKS 



Till- |>ij;c<>n had previmi.sly slriij.'nliMl viiileiitly, but il8 slriipffles were 

 H|i|iureiitly volunlury. It wim bu ueiik ui> not to be able to walk, 

 ami wa.s now lukeii out of the box. It wa." unable tu utanil at all. 

 12:8 p. M. the reital tcni|ierulurc 112 ..5; pip'uii is now able to po»h 

 itself aloiiir, altlunigli not to stand. 12:;iO r. m. pijreon npparFDily 

 all right, but not disposi-d to fly, and it.s fcatliersi seem riilllcd. I'ifsroo 

 died some time between 2 and 5 p. x. 



Aiitopni/ made twenty-four hours afterwards showed tiiat the blood was fluid, and very dark. 



ExPKltlMENT '20. 



,\n adult pigeon, licetal trinpcrnlnre, lO'.l .5. 



At 12:2'.) I'. M. il was put in hot air chamber. 



12:39 P.M. — KecUl temperature, 112'. 



12:5.T P. M. — Ueetal temperature, 117°. 5. Ilinl lying tui baek and side, apparently dying. Il wa» 

 ]dungrd in ci>ld waterfor several minutes, and when taken out its rectal temperature wa.-- lOO'..*). It 

 was unable to make ony effort ; with very irregular, jerking brcolhing, so that I momentarily cx- 

 peclcti it to die. It was not again put in water. 



2 minutes (after toking out of water). — Temperature 107". 



3 minutes — General condition growing worse. 



10 minute.'j — Reviving. Able to push itself along. 



12 minutes. — Teinpcroturc lOP. On application of galvanic cnrreiil, muscles respond well. 



25 minuter — .\1thongh pigeon hos been in a warm place, it.s temperoture is Ofi". 



2 hours. — Pigeon much belter; lies quiet all the time, but can walk, though eonstontly falling; 

 ■till, is Ix'tler. Il has l)oen dry and in n warm place for two hours, but its temperature is only 100*. 



3 hours. — Left Bs before. 



5 hoam. — Found deod, cold, and cigid. Hlood ns first taken out dark nnd fluid, but on standing 

 in • te«t-tul>c forming into n firm congnlum. 



Tlicsc rxpcrimonts rrrtaiiily slinw that in tlic Idwrr animals flic nhstrartion of 

 hont by cxtrrnnl cold, after the animal lias hvcu artifirially licattd, is followcil nt 

 once by the subsidence of the symptoms, provided tliat the liii,'h temperature has 



