234 GF. Barker—Physiological Chemistry. 
angle of the rhomb, into which other pairs of twins may gi 
producing four pointed stars. And these, by the filling m 
their reéntering angles, pass into square tables, which ind 
in thickness and resemble cubes. The obtuse angle of the 
rhomb too, is often rounded. Bee 
Hematoidin is one of the most beautiful substances xn0W 
_ to organic chemistry, resembling murexid very closely. BY 
_ reflected light, perfect crystals show a magnificent cantharides 
een color and a metallic luster ; by transmitted light they 
appear red. If not too thick, the crystals, as viewed esi 
microscope, seem to be a pure magenta red ; and eis A 
crystals irregularly aggregated together show a rich biue ™ 
t. 
violet. tin a 
The complete sagan of these crystals from the ee 
second portion not quite free from fat, was recovered ie 
etherial solution. This was used for the bese of 110! 
imemerating it on platinum foil. A gray speck rem ere: 
gx 
_ iter treatment with ether, the crystals have 
illiant cantharides-green luster, their surfaces beng 
eer _ They now resemble freshly prep 
: sae tee Mle 
perfectly pure, Holm is unwilling to decide upon 
y pure, Holm g 
en color is develo givi 
ematoidin is very readily soluble in chloroform, 6 
gold-yellow solution; and in’ carbonic disulphid. with 8 
red color, or orange if greatly diluted. Less soluble in avs 
