I ' ntenU. 



BY .i. & m.\vi;i i. 



PA 



I Extinct] i of North America, with Descriptions 



( .f - .: ... v .■. S es of Fossil Plants from the Cretaceous and 



Tertiai i 1 



Basin of th< Greal Lakes, and the Valley 

 nf the Mississippi 'Jr.! 



m li.i.ii*! poi v. 

 I; l"i-li of Cuba belonging to the Genus Trisotropis, with 



an Introductory Note by J. Carson Breyoort 301 



Note on the Hermaphroditism of Piah 309 



- of Cuban Fish 317 



BY TEMPLE ri'.iMi;. 



■ - applied t<> Pisidinm, a genus of Corbiculadaa 276 



■ ■>"(' MolluBca found in the vicinity of North Conway, 



tf< Hampshire 280 



3p» es of tbe Family Corbiculadse, with Figures 298 



BY i mi.i.m \\ r. ROBINSON. 

 ; u m \i. Miscellanies 152, 310 



BY PAUL m II w I.IT/.KK. 



<»\ ". Phosphoric Acid ; its history, ite modes of separation from 



jquioxyds, principally from Sesquioxyd <>f [ron, and itsestima- 



i 158 



r.'i SANDERSON -mi I II and I I MlM.i: I'KIMK. 



I ..ii tin- Mollusca of Long Island, N. Y.. and oi its Dependencies, -rr 



BY I Ml. i. \. I I.I I.K W1IT. M l>. 



ed ■■■: the Eyes of Amblyopsis spelaeus 150 



i:v i.e. -.,'i ii.k. 

 ins on a ' Chalchihuitbi from I 



