BLOOD. 375 



sue . Blood obtained by incisions into the skin of children who 

 died of this disease contained, according to Chevreul, water, 

 globules, and a fibrinous matter, possessed of little tenacity. 

 The serum separated from the crassamentum was almost colour- 

 less. In a few minutes it assumed the form of a jelly, owing 

 probably to some change in the state of the albumen. 



2. Menstrual Blood. This blood is a mixture of arterial blood 

 and mucous matter, varying in proportion according to circum- 

 stances. That of a woman, 27 years of age, analyzed by Dr 

 Dennis, contained, 



Water, - . . 825-0 



Globules, . 64-4 



Albumen, . 48*3 



Extractive matter, . 1*1 



Fatty matters, . 3-9 



Salts, . . 12-0 



Mucus, . . 45-3 



1000-0 



It has usually a dark-red colour, a peculiar smell, and, instead 

 of crassamentum, contains small clots of little consistency. 



Dr Rainy, Professor of Forensic Medicine in the University 

 of Glasgow, analyzed a quantity of menstrual blood, obtained by 

 puncturing an imperforated hymen. It was above six weeks old, 

 but not much putrid. It was quite fluid, and could easily be 

 poured and even dropt from a phial. It was browner in the co- 

 lour than ordinary blood, somewhat foetid, and disengaged am- 

 monia on the addition of potash. When examined under the 

 microscope, the globules were seen apparently as numerous as 

 in ordinary blood ; but their shape was somewhat irregular, as 

 is usually the case with putrid blood. It was composed of 



Water, . 88-55 



Solid residue, . 11-45 



100-00 



Mr Macconechy found the serum of this blood composed of 

 Water, . 91-28 



Solid residue, . 8-72 



100-00 



