ON THE PATHOLOGICAL MORPHOLOGY OF SOME ANIMAL FLUIDS. 229 



and form a white fluid resembling mucus, which is easily drawn into 

 threads, and when dried, no form is any longer seen. 



Caustic ammonia does not change the globules. 



Diluted nitric acid 1,170, corrugates the envelopes of the globules, 

 and forms one contracted central nucleus, which is distinctly to be seen. 

 Plate 6, fig. 102. 



Diluted hydrochloric acid 1,070, like nitric acid, corrugates the en- 

 velopes, and one moderately clear and contracted nucleus is seen. 



A solution of nitrate of silver 1,275, renders the coverings trans- 

 parent, the remaining contracted nucleus being clearly seen. Plate 6, 

 fig. 103. 



In alcohol 0,830, the envelopes of the globules become corrugated, the 

 nucleus, when there is one only, equals twice the diameter of the blood- 

 globules; or when three nuclei are found, they are even five times 

 smaller than the blood- globules. Plate 6, fig. 101. 



The upper stratum is more fluid, is endowed with much fewer glo- 

 bules of pus, and a greater quantity of the white pellucid fluid. The 

 fewer globules it contains the whiter is the colour, and the more of fluid 

 (serum) is contained, the more fluid the stratum is found to be. 



In large subcutaneous rheumatic abscesses, the different fasciae, cel- 

 lular tissue, and the smaller vessels and nerves, are found infiltrated 

 with pus. 



Globules of pus found in the parenchyma of organs, evidently sepa- 

 rate its fibrils and fibres one from another and surround them ; hence 

 the colour of the parenchyma is changed to yellow, reddish-yellow, 

 brownish-yellow, greenish -yellow, according to the quantity of pus- 

 globules and the colour of the organ in its healthy state : thus, for ex- 

 ample, cellular tissue, which is white, when infiltrated by pus, becomes 

 yellowish- white, or from white, greenish-yellow. Plate 10, fig. 64. 

 The liver, also, when infiltrated with pus, from reddish-brown, becomes 

 yellow ; the kidnies, from red, change into a yellow colour. By this 

 infiltration, the texture of organs loses much of its cohesion and tena- 

 city, the organs are consequently rendered friable and soft, until the 

 number of the globules shall have so increased, that the lacerated fibrils 

 completely dissolve, and, mixed with pus are enclosed by the surround- 

 ing texture, which is as yet firm. This state of things is called an ab- 

 scess. Some of the globules of pus which have been shut up for a long 

 time in an abcess, are composed of an envelope filled with very small 

 molecules, others of the small molecules only. Plate 10, fig. 61. 



But the globules taken from a metastatic abscess, thirty -six hours after 

 death, were destitute of all covering, Plate 10, fig. 62. Globules taken 



