PART I.] Effects of Injecting Solution of a Healthy Evacuation. 125 



It was accordingly killed with chloroform, and a post-niorterii examination was 

 performed at once. The appearances which presented themselves did not difier 

 materially from those described in connection with the preceding experiments. Pre- 

 parations of the peritoneal fluid and of the blood were, as usual, mounted in wax- 

 cells. The peritoneal fluid was examined an hour after its removal from the body, 

 and was then found to contain an abundance of minute active bacteria. There were 

 also numerous bioplasts and red blood-corpuscles, the former of irregular shape, and 

 showing slow changes in form only. Three hours afterwards the bacteria continued in 

 activity, the bioplasts were very ragged in outline, and there were now numerous groups 

 of delicate, beaded, motionless threads resembling leptothrix, present. On the following 

 day these threads had disappeared, and the preparation was crowded with bacteria and 

 monads, some of which were motionless, whilst others were in full activity. 



The preparation of the blood was also examined an hour after it had been set 

 up. It then showed no distinct bacteria, but contained numerous minute, motionless 

 molecules. It was again examined after an interval of three hours, and a few active 

 molecules, together with two very active short vibriones, were observed in the serous 

 ring. Only two or three white cells had crept out. A second preparation, however, 

 at this time contained an abundance of free white cells, and showed neither active 

 molecules nor bacteria. On the following day the former preparation showed some 

 patches of still molecules : the latter now contained a few active bacteria. No further 

 developments occurred in either of these preparations subsequently. 



Experiment LXXVII. — A healthy pariah dog was put under the influence of 

 chloroform at 8-30 a.m., and half an ounce of peritonitic fluid which had immediately 

 before been removed from the abdominal cavity of the dog of Experiment LXXV 

 was injected into the abdomen. The animal appeared to be somewhat dull and 

 depressed for a short time, but in the afternoon it seemed to have entirely 

 recovered from the effects of the operation. It continued in apparent health 

 throughout the following day, and was killed with chloroform on the next morning, 

 48 hours after the injection. 



A post-mortem examination was performed at once, but no lesions could be 

 detected. There was no peritonitis, and all the organs were quite healthy in 

 aspect. 



Experiment LXXYIII. — A large healthy pariah dog was put under the influence 

 of chloroform, and an ounce of the supernatant fluid of a solution of healthy 

 evacuation was injected into the peritoneal cavity. The solution was that employed 

 in Experiment LXXV, and was at the time of injection 72 hours old. It had 

 been retained as before in a wide-necked bottle plugged loosely with cotton- 

 wool. 



The dog was dull and depressed during the day, but drank water freely in the 



