184 Miscellanies. 
he has set forth the subject with great clearness and beauty. His exhibie 
tion of the storms of the Southern hemisphere is full and satisfactory, and 
entirely accordant with Mr. R.’s published statements. As Americans, 
we can not but feel much gratified with the frankness with which he 
attributes to our countryman the credit of establishing the true system, on 
a subject of such interest and magnitude. The skill and research with 
which the work is executed, and the candor with which he ascribes honor _ 
where honor is due, are creditable alike to the head and heart of its author. 
The volume deserves attentive study; as the matters of which it treats, 
and the results which it presents, are not only interesting to the theoreti- 
cal philosopher, but also of immense importance to all who expose their 
lives or their fortunes to the perils of the ocean. 
<9. Observations on “thé. genus Unio, together with descriptions of new 
genera and species in the families Naiades, Colimacea, Lymneana, Me 
laniana, and Peristomiana, with numerous colored plates: by Isaac La, 
Member Amer. Philos. Soc. etc, Vol. II, quarto, pp. 152. Philadelphia— 
(constituting Trans. of Amer. Phil. Soc. Vol. VI, Part 1.) 
The present volume consists of several papers read before the Ameri- 
can Philosophical Society, from Dec. 19, 1834, to July 21, 1887; and 
embracing descriptions of the following — new species of shells, to the 
names of which we annex their habitats : E 
One arctior, Ohio river. —  ~ time Jgunus, S. Car. 
: ee 
lugubris, 
“ folliculatus, “ 
= “cc te 7 <3 
con > a 
“*  spinosus, re 
a . 
interruptus, : “splendidus, “ 
“ Cumberlandicus,. “ “ dolabreformis, “‘ 
“*  simus, : Jayensis, Florida. 
“  notatus, > “  Claibornensis, Ala. 
“ec : 
— Barneiionus, * “ turgidus, Louisiana. 
= Zeighriauus, ve “  Hydianus, 
“  creperus, i os Fisheritonns, Maryland. 
“*  glaber, at rm Noui-Eboraci, New York. 
ce “ 
2 gibber, Bg “  Tappanianus, Penn. ¢ 
Vanuxemensis, ‘ ~ “ Tampicoensis, Mexico. 
ce 7 i . 
a Muhifeldianus, “ **  carbonarius, ‘ 
“  Menkianus, - “<  pliciferus, ¥ 
venustus, Potosi, Mo. _. © Medellinus, : 
Vaughanianus, §. Car. we Brownianus, Ameen, river. 
