"PART I.] Injections of Ordinary and Decomposing Fcecal Solutions. \ 1 3 



Experiment LIX. — Four drachms of the alvine solution, 96 hours old, as used in 

 the last experiment, were injected into the right femoral vein of a moderate sized dog 

 under chloroform. The dog continued to be very active for some time, and attempted 

 to make his escape, and was evidently by no means so much affected as the previous 

 animal. By the next day it appeared to be quite well, and some more decomposing 

 material was introduced into its circulation without producing any effect (^cide 

 Exp. XLVII). 



Experiment LX. — A large healthy dog placed under chloroform, and four drachms 

 of the solution used in the two previous experiments were introduced into the right 

 femoral vein. There was no loss of blood. It continued drowsy for a considerable 

 time, but recovered during the course of the day, and by the fifth day was so far 

 recovered as to seem fit to undergo another operation {vide Exp. LXIII). 



Experiment LXI. — A small healthy pariah dog was put under chloroform, and five 

 drachms of the solution of ordinary foecal matter used in Exp. LVII, etc., now 

 96 hours old, were injected into the right femoral vein very successfully. The animal 

 died within a few hours, and a post-^mortem, examination was made. 



There was slight injection of the diaphragmatic pleura close to the pericardium, 

 otherwise there were no indications of disease. The intestines were perfectly healthy. 



Wax-cell preparations of blood from the heart and of fluid from the mesenteric 

 glands were under observation for four days. The blood specimen continued perfectly 

 free from all moving particles whatever, and contained no distinct motionless bacteria ; 

 whereas the gland-juice preparation was swarming with bacteria on the second day. 



Experiment LXIL— As the dog used in Exp. XLVIII appeared to be vigorous 

 and in excellent health, he was again put under chloroform, and six drachms of the 

 same fluid as was used on the previous occasion, but now farther advanced in decom- 

 position, being 96 hours old, were injected into the left femoral vein ; on the third 

 day he appeared to be perfectly well again, and when examined after being killed 

 under chloroform, all the organs, including the intestines, appeared to be in a healthy 

 condition. 



A wax-cell preparation of the blood and another of fluid derived from the mesenteric 

 glands were kept under observation for three days, but no moving bodies of any kind, 

 monads or bacteria, were seen from first to last. 



Experiment LXIII. — The powerful dog used in Exp. LX looked so well on 

 the following day, as to be considered fit to undergo another operation, consequently 

 having been brought under the influence of chloroform, six drachms of the solution 

 of foecal matter used in Exp. LVII, now 96 hours old, were injected into the 

 remaining femoral vein. 



The animal very quickly recovered from this also, and on the third day was 



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