ON THE PATHOLOGICAL MORPHOLOGY OF SOME ANIMAL FLUIDS. 265 



are few in number. They are white, composed of an envelope and 

 the smaller molecules, at least usually, so that the pus is more fluid 

 and white. The globules sensibly multiply, and are remarked of a 

 white-yellow, or yellow colour, with an envelope, and smaller or larger 

 molecules, and also a white central vesicle. The envelope swells in 

 water, and is easily broken ; but the molecules, with the central vesi- 

 cles, being expelled, are firmly joined together. By a law of attrac- 

 tion, and at this time, the pus is rendered thicker and of a deeper 

 yellow. In this way can be explained the reason why pellucid lymph 

 taken from variolous vesicles, produces the effect of inoculation of 

 the variolous contagion more surely than the turbid or purulent serum 

 of the pustules ; because the envelopes of the globules in the latter 

 case being very quickly broken, the globules lose the power of gene- 

 ration and fecundation. 



Pus of the most advanced stage of inflammation contains globules 

 destitute of envelope, and lacerated ; and if the secreting pathological 

 organ shall have been open, they are intermixed with epithelium. 



3rd. The product of a specific inflammation differs from the product 

 of a normal inflammation ; thus, in tuberculous inflammation of the 

 lungs, peculiar lenticular bodies concentrically striated, occur which are 

 six times larger than the globules of pus. In the variolous process, 

 conoid or cylindrical animalcules, exercising a circular motion, are inter- 

 mixed with the pus globules. 



4th. Globules formed from irritation or inflammation of mucous and 

 serous membranes, their continuity being uninjured, have usually a 

 larger diameter than those of abscesses and wounds treated by dry re- 

 medies, on account of the prevailing abundance of serum, in which the 

 globules swell as if in water. 



5th. Pus, purulent serum, pathological mucus, pathological lymph, as 

 well fluid as thick, are composed, like the blood, of globules and a fluid ; 

 the globules and the fluid differ as much also in quantity and quality. 

 The quantity of the globules determines the colour and density of the 

 pus. The form of the globules is different ; most of them are round, 

 some are elliptic, oblong, many cylindrical. Their magnitude is equally 

 different ; the smallest equal, the largest are eight times the diameter of 

 that of thesblood- globules. The colour of the globules is white or yellow, 

 some are almost pellucid, others transparent. Globules of pus are pro- 

 vided with a very thin envelope ; some, however, are destitute of it. 

 Some are filled with very small molecules, but others with larger ones. 

 The central vesicle is not met with in all, but some are endowed with two 

 or three. In some the central vesicle is filled with the smallest molecu- 

 les, in most of them the central vesicle is destitute of all molecules. 



