694 



APPENDIX. 



Fio. 415. 



appearing of a dark brown color. Where the liquid has a 

 neutral, or slightly alkaline reaction, the globules are red. 



Pus-globules are also occasionally found in the urine, more or less 



changed in shape, according to the 

 length of time they have remained 

 in the liquid. After long soaking 

 they completely disintegrate. De- 

 posits of pus are often accompanied 

 with crystals of the triple phosphate. 

 This is especially the case when the 

 pus is derived from the bladder. 



Large and small organic globules, 

 exudation cells, spherical cells con- 

 taining nuclei and granular matter, 

 &c., are also found in the urine. For 

 descriptions of these bodies, the stu- 

 dent is referred to the work of Dr. 

 Golding Bird, on Urinary Deposits. 



INORGANIC CONSTITUENTS OF 

 URINARY DEPOSITS. 



Lithic or Uric acid is one of 

 the most common urinary deposits. 

 In color it varies from a light fawn 

 to a deep orange-red, the usual hue 

 of the crystals being yellow. Some- 

 times they are almost colorless. They 

 assume a great variety of forms, the 

 most common and most characteris- 

 tic of which is the rhomboidal, Fig. 

 413, — the form usually generated 

 when the lithates are decomposed 

 by means of an acid. Fig. 414 re- 

 presents the peculiar forms of uric 

 acid found in the urine of patients 

 laboring under acute and scarla- 

 tinous dropsy. Sometimes the crys- 

 tals are square and lozenge-shaped, 

 to consist of adhering masses and 



Fio. 416. 



Other varieties are seen 



(5) 



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0% oO 



^^ 



flat scales, with transverse and longitudinal markings. Some 



