s 
128 Scientific Intelligence. 
— questions to settle in Natural History, and I have several years 
ago, proposed a plan for its investigation, which, if well conducted, 
‘would lead to as important results, as any series of maw which 
can be conceived, for it might settle, once for ever, the question, in 
first called into existence. But the investigation would involve such 
long and laborious — that I doubt whether it will ever be un- 
dertaken. It has occurred to me, that the final step would bea thorough 
an attempt to raise embryos the species found in the cave, under 
various circumstances, diddeneet from those, in which they are naturally 
found at present. 
If seaeal circumstances ever modified organized beings, it should 
be easily ascertained here. For my own part, however, I think that the 
ca en diet th ey were created cae the circumstances in which t 
now live, within the limits over which they range, and with the eines 
tural peculiarities which characterize them, at the present day. But 
experiment, might be sure to earn the everlasting gratitude of men of 
science. And here isa great aim for the young American naturalist 
who would not — from the idea of devoting his life to the solution 
of one “oe que 
4. On Sauce ees of the United States; by Prof. 
Lewis R GipBes, (Proc. Amer. Assoc., 3d meeting held at Charles- 
ton, 5. C., March, 1850.)—This coiabewse of the species of Crustacea 
in the principal collections in this country (exclusive of that of f the Ex- 
ploring Expedition at Washington) is enriched with many valuable 
notes, by the sata and epertoes: of — new species. ie 
mes of the new species are as follows :—Hayas aculeata, from Key 
West, Cryptopodia granulata, from "Chiesa: Harbor, Carpilius 
lividus, from the Sandwich Islands, Carpilius pretermissus, E. Indies, 
Chlorodius Floridanus, from Key West, Panépaus Wurdemannii, from 
Enterprise, Florida, — Sayi, (Lupa aieaen of Say,) Grapsus 
transversus, from Key West, Hepatus decorus, Charleston tesek llia 
armata, Porcellana ocellata, coast of S. Ca rolina, P. armata, from ae 
Florida, P. sexspinosa, from Key West, P. magnifica, from Vera Cruz, _ 
P. macrocheles, coast of S. Carolina, Ibarws novemdentatus, Callianassa 
grandimafta, from Key West, Alpheus formosus, from Key West, Pon- 
tonia domensiens coast of S. Carolina, Hippolyte Wurdemanni;, from — 
Key West, H. paludosa, fresh-water ponds, S. Corse Squilla neg- 
ra Charleston Harbor. cone 
a 
