FLUID PRODUCTS OF DISEASE. 485 



light, flocculent, brown deposit, and evolved an ammoniacal 

 odour. 



In 1000 parts there were contained : 



Water .... 934-762 



Solid constituents 65-238 



Not a trace of urea could be found; it had probably been 

 converted into carbonate of ammonia.] 



Cysts may either be filled with a solid matter, as for instance, 

 fat (in which case they form the fatty tumours of which we 

 have already spoken), or they may contain a fluid. 



Collard de Martigny analysed the fluid contents of a cystic 

 tumour situated between the rectum and the uterus. The fluid 

 was of the consistence of a syrup, of a dirty yellow colour, 

 viscid, and of a sickly odour. When evaporated at a tempera- 

 ture of 104, it left a brown residue amounting to 12*8, which 

 softened in water without dissolving, and on heating gave off 

 an odour of burned horn. On the addition of alcohol to the 

 fluid a thick, elastic, yellow mass was precipitated ; which 

 dissolved in water and was again thrown down on adding a 

 dilute acid, but was soluble in an excess of the reagent. The 

 alkalies, sulphate of iron, and nitrate of silver, exerted no in- 

 fluence on this solution, but a yellow precipitate was thrown 

 down by nitrate of the protoxide of mercury, tincture of iodine, 

 tannin, and bichloride of platinum. From these imperfect data 

 it is impossible to form any conclusion regarding the true nature 

 of the fluid. 



I made an analysis of a thick chocolate- coloured, alkaline 

 fluid, obtained by puncture in a case of ovarian dropsy. Under 

 the microscope there were a considerable number of pus-cor- 

 puscles, and a few coloured blood-corpuscles visible. It con- 



