184 



Scientific Intelligence. 

 .1 



Other specimens show a complex and beautiful structure in- 

 the cross-section, as suggested in figure 2 (drawings by Mr. 

 Howden). This variety, which is locally known as howdenite,. 



occurs in square or rhombic faces, often with concave faces, and 

 enclosed by a green crust from ^§th to ^th inch in thickness^ 

 The purer portions show many tints of color from white or gray 

 to yellow, pink, red and purple. 



Obituary. 



Professor Angelo Heilprin, the naturalist and geologist, died 

 on July 1 7 at the age of fifty-four years. 



A notice is deferred. 



