202 ON THE PATHOLOGICAL MORPHOLOGY OF SOME FLUIDS. 



Microscopico- Chemical Investigation. 



The globules contained in yellow mucus, consist of smooth, very 

 thin envelopes, in which again primitive molecules, and a single or 

 double central vesicle are seen. The magnitude of the globules exceeds 

 by six or eight times that of the blood- discs ; but the diameter of the 

 central vesicles scarcely equals it. 



Globules exposed to distilled water increase in volume, although they 

 may all have been freed from the adhering mucus, the envelopes break, 

 the central vesicle and primitive molecules remaining. Plate 7, fig. 24. 



Acetic acid 1,030 dissolves the envelopes and primitive molecules, 

 but the central vesicles remain intact, aye and more than this, they are 

 seen more clearly, but their number increases from one to six. Plate 6, 

 fig. 82. 



Oxalic acid dissolves the envelopes, the central vesicles from two to 

 five in number remaining. Plate 6, fig. 85. 



Tartaric acid quickly dissolves the envelopes ; the central vesicles, 

 observed of a white colour, remain. 



Diluted nitric acid 1,170, corrugates the globules, and tinges them 

 of a deeper yellow colour. Plate 6, fig. 83, a. 



Diluted hydrochloric acid 1,070, corrugates the globules. 



A dilute solution of the nitrate of silver 1,075, corrugates the co- 

 verings of the globules, and leaves them tinged of a yellowish colour. 

 Plate 6, fig. 84. 



Concentrated solution of nitrate of silver 1,275, at first dissolves the 

 coverings and the primitive molecules, the central vesicles remaining, 

 from one to four being seen clearly ; but in a longer time the central 

 vesicles themselves become dissolved. 



Solution of pure potash 1,350, dissolves the globules, and a white 

 pellucid mucous fluid remains. 



Spirit of caustic sal ammonia 0,980, produces no change. 



Lime water occasions no change. 



Spirits of wine 0,830, contracts the globules. 



In crude pneumonic sputa, white, irregular, turbid particles are found 

 intermixed with mucus, which are composed of an entire patch of cells 

 of non-nucleated epithelium, joined to each other in symmetrical order, 

 on whose surface irregular globules (plastic exudation) are found. 

 Plate 6, fig. 86. 



Tenacious mucus of yellow globose sputa, which embrace or enclose 

 the globules above described, appears, when submitted to the micro- 

 scope, white, almost pellucid, and free from globules. 



