42 
ON TIIE PRESENCE AND EFFECT 
when she was alive. The pleura covering these diseased portions 
seemed not to be quite free from disease. The general cellular 
tissue had no jaundiced appearance. 
The owner of this cow has had one ill since of the same dis- 
ease, and which recovered under my treatment. He says he has 
lost one or two every year, from the same complaint, for twenty 
years past. They have fed on the same land, which is low, and 
at nights has a fog generally hanging over it. 
ON THE FREQUENT PRESENCE AND EFFECTS OF 
PUS IN THE BLOOD, IN DISEASES ATTENDED 
BY INFLAMMATION AND SUPPURATION. 
By George Gulliver, Esq., Assistant Surgeon to the 
Royal Regiment of Horse Guards. 
In the prosecution of an inquiry in which I have been long en- 
gaged concerning inflammation and suppuration, I soon perceived 
the necessity of instituting a careful examination of the blood in 
these affections, and particularly in the different forms of inflam- 
matory fever and hectic. 
The result has been the detection of pus in the blood in almost 
every instance in which there was either extensive suppuration, or 
great inflammatory swelling without a visible deposition of pus in 
any of the textures of the body : and the contamination of the 
blood by pus appears to me to be the proximate cause of the 
sympathetic inflammatory, sympathetic typhoid, and hectic fevers. 
Since the writings of Dr. Lee, Mr. Lawrence, Mr. Arnott, and of 
MM. Velpeau, Dance, and others, the profession has become 
familiar with cases in which pus has been found in the veins, par- 
ticularly after surgical operations, and in uterine phlebitis ; but 
although the humoral pathology has of late years begun to assume 
some of its ancient importance, I am not aware that any waiter 
has attempted to demonstrate the dependence of the fevers under 
consideration on the presence of pus in the blood. 
Previous to a brief notice of some of the experiments and ob- 
servations from which the results have been drawn, it may be 
proper to mention the means by which I have detected pus in the 
blood. The examination was very simple, — partly chemical, and 
partly by the aid of the microscope. Those who are acquainted 
with the minute constitution of the animal fluids are aware of the 
rapid and energetic action of water on the blood-corpuscles : now 
