52 CHEMICAL PHYSIOLOGY. 



Ovaries. 



follicles and the corpora lutea. The latter contain 

 fluid and coagulable serum, particularly while they 

 possess an internal cavity. In their substance is depo- 

 sited in granules luteine, a yellow matter soluble in 

 alcohol, ether, and chloroform, and distinguished by 

 three absorption-bands which its solutions show in the 

 blue and violet part of the spectrum. A similar yellow 

 matter is contained in the yelk of eggs. The yellow 

 colour of corpora lutea is not due to hematine as has 

 hitherto been generally assumed. 



In some forms of ovarian cyst a yellow albuminous 

 fluid is contained, which shows the spectrum of luteine 

 without any preparation ; in this morbid fluid the luteine 

 (cysto-luteine) is therefore contained in solution, while 

 in the normal corpora lutea it is contained in granules 

 (o vario-luteine) . 

 giSd? The salivary glands contain mucine and leucine, 



xan thine and hypoxan thine. 



Pancreas. The pancreas contains much leucine, a homologue of 

 it, xanthine, hypoxanthine, and guanine. Also some of 

 the ferments mentioned in the paragraph on digestion 

 can be extracted from its pulp as well as from its juice. 

 Liver. The liver consists of cells, which are the main seats of 



its specific function, and of blood-vessels and bile ducts, 

 interspersed with lymph vessels and nerves. The blood 

 can be washed out by water. The cells are made up of 

 a protoplasma, which may contain as visible ingredients 

 fat in large and small granules, cholophaeine in small 

 red granules, nuclei, with one or two corpuscles, and 

 as invisible ingredients demonstrable by experiment 

 only, a coagulable matter which sets soon after death, 



