194 Mr. G. Gulliver's Researches oti Suppuration. Sect. I. 



and blood is equally remarkable. Hence I have employed 

 these agents advantageously in conjunction with the other 

 means; and I have also seen pus-globules in the blood, though 

 rarely, without any preparation. With water, however, the 

 examination is most easy, simple, and satisfactory, if the ob- 

 server be thoroughly familiar with the microscopic characters 

 of the fluids under examination. A good instrument, never- 

 theless, is necessary; and the admirable deep object glass of 

 Mr. Ross is the one I have principally employed. It is hard- 

 ly necessary to add, that chyle-globules are not likely to be 

 mistaken for those of pus, since, independently of other di- 

 stinctions, the medium diameter of the latter is at least TtrW^^^ 

 of an inch, which is above twice that of the former. 



Exp. 1. A weak solution of corrosive sublimate was in- 

 jected into the subcutaneous cellular tissue of a dog's thigh ; 

 great swelling of the limb took place, and he died forty-five 

 hours after the injury. A good deal of serum mixed with 

 fibrine was found in the cellular tissue of the thigh, but there 

 was no purulent deposit. 



Several pus-globules were detected in some blood obtained 

 from the right ventricle of this dog's heart. 



Exp. 2. A large dog had both his tibiae injured by some 

 operations connected with necrosis ; great swelling of the 

 limbs, with violent fever, succeeded, and he died forty-three 

 hours subsequently. 



A large quantity of fibrine was found effused into the cel- 

 lular tissue of the extremities, mixed, in one of them, with a 

 very scanty proportion of purulent matter. 



In some blood, obtained from the vena cava, numerous glo- 

 bules of pus were observed. 



Exp. 3. An irritating fluid was injected into the perito- 

 neum of a dog ; he had great thirst, refused food, and died 

 the third day after the operation. 



A large quantity of coagulated lymph and sanguinolent se- 

 rum with some pus was found in the belly. 



In some blood obtained from the inferior cava vein many 

 globules of pus were seen. 



Exp. 4. Two ounces of pus were injected into the left 

 pleura of a dog, and very carefully confined there ; he was 

 thirsty and feverish for fifty-five hours after the operation, 

 when he was killed. 



An ounce of fluid, almost entirely serum, was found in the 

 pleura, and some fibrinous exudation on the membrane. 



