until only 6 grains remained, the specific grav/ty 

 of this internal nucleus proved 1,194. CHE- 

 NEVIX, and before him FOURCUOY, state, that 

 the lens consists of albumen and glue ; and yet 

 it contains neither the one rior the other : it 

 is almost completely soluble in water, and the 

 solutioli is coagulated on boiling; but the. coagu- 

 lated mass does not resemble albumen, it is gritty 

 and opaque, exactly like the colouring matter of 

 the blood, which it resembles also in being easily- 

 dissolved in acetic acid, after the coagulation 

 The coagulum is as white as snow,, and leave* 

 after combustion a small quantity of ferrugineous- 

 ashes. As far as we can discover, it differs only 

 from the colouring matter of the blood, by its 

 want of colour. It is not improbable, that the co- 

 louring matter is divided into the colouring part 

 strictly so called, which is deposited in the cho- 

 roiclea, and the un coloured albuminous funda- 

 mental substance, which passes on and forms the 

 crystalline lens ; although they do not receive 

 their blood from the same, but separate branches 

 of one and the same artery that is, the ophthal- 

 mic. Some attempts which have been made ta 

 change a dissolved lens into colouring matter, by 

 adding to it phosphate of iron, in various modi- 

 fications, have not been more successful thai*. 





