124 Researches Regarding Cholera. [parti. 



bodies resembling the white corpuscles of the blood, and containing numerous red 

 blood-corpuscles also. More than half of the white cells were still actively emitting 

 long stringy protrusions. There were numerous delicate fibrinoid threads netted 

 through the preparation, but although a careful search was made for them with the 

 l^th immersion lens, neither bacteria nor vibriones could be anywhere discovered in it. 

 Three hours afterwards, however, a few motionless bacteroid bodies were observed in it, 

 and twenty-four hours after, a few moving bacteria were present, and the field was 

 covered with elongated motionless vibriones (Leptothrix ?). 



When the small intestines were laid open, the ileum immediately above the ileo- 

 coecal valve was found to present a perfectly normal aspect, but throughout the rest of 

 the gut the mucous membrane was coated with a tarry layer similar to that observed 

 and described in several previous cases. As before, this was found on microscopic 

 examination to consist of the normal tough intestinal mucus crowded with blood- 

 crystals and containing a few white granular cells, but entirely devoid of red blood- 

 corpuscles and epithelial cells. There was no detachment of epithelium, and on 

 peeling off the bloody, mucous layer, the epithelial coat was exposed quite intact and 

 merely characterised by a certain dryness of appearance. The large intestine was 

 unaffected, and the rest of the abdominal organs appeared to be healthy. The bladder 

 was full of urine. 



On opening the thorax the lungs and pleurae were found to be perfectly healthy, 

 but the pericardium was injected, and there were deposits of lymph on its surface. 

 The heart did not present any abnormal appearances. 



A preparation of blood from the heart was, as usual, mounted in a wax-cell. 

 When examined, an hour afterwards, no traces of monads or bacteria could be detected 

 in it. Three hours subsequently it was again examined, and one or two moving 

 molecules, together with some still ones, were then detected, whilst very few white 

 corpuscles had crawled out into the serum. On the following day there was an 

 abundance of active bacteria in the serum ; they continued in motion throughout that 

 day, but had all become still when the preparation was again examined on the 

 subsequent morning. 



Experiment LXXVI. — A very powerful pariah dog was put under the influence 

 of chloroform, and one ounce of the peritonitic fluid obtained from the 

 abdominal cavity of the dog of Experiment LXXTI, and which had been previously 

 employed in Experiment LXXTII, was injected into the peritoneal cavity. This fluid 

 had been kept in an open gallipot for thirty-six hours at the time when the injection 

 was performed. 



The dog rapidly recovered from the influence of the chloroform, and remained 

 somewhat dull and sluggish throughout the course of the evening. It did not, however, 

 show any symptoms of pain or cramps, and on the following morning, about fifteen 

 hours after the injection, it did not appear to be any worse. 



