1853.] 



295 



II. 1-7400 grms. gave: 



0-0345 grms. of Sulphate of baryta and Sil. acid, which contained 



i 



^ 



The analyses which have already been made show a great similarity of com- 

 position as far as regards the inorganic constituents of fossil and recent bones 

 of mammalia, a fact which receives still farther confirmation from the above 

 analyses. In some few points it will be noticed that the inorganic constitutio)i 

 of these specimens differs from that of analyses already published. This dif- 

 ference may be accounted for by the effects of infiltration, by which a portion 

 of the original substances may have been washed out, whilst its place was sup- 

 plied by extraneous matter. All the analyses show an excess of lime, which 



* As a small quantity of phosphoric acid was lost in its determination, the 

 loss in the analysis was calculated as phosphoric acid. 



45 



