Geology, Sc. of the Connecticut. 81 
ciently for rivers to have found their channels. On the 
map it embraces the alluvial plain around New-Haven and 
the salt marshes extending some distance on both sides of 
the city. The plain of New-Haven is made up of coarse 
sand with some gravel and an intermixture of broken shells 
and sea weed. ‘The marshes consist of sand, mud and 
salt. 
The region about New-Haven, embraced by oe me a 
is interesting to the botanist, as he here finds m 
not growing in the interior. Among these, we tea men- 
tion Salsola kat, Salicornia herbacea, Triglochin mariti- 
mum, Statice limonium, fra frutescens of Lin, and dmmi 
capillaceum and Conyza camphorata of Muhl. Limnetis 
polystachia and juncea of Ph. L. glabra, Muhl. Holcus 
odoratus, Mx. and Limosella subulata, Ives. Here also, 
occur the other new species of Prof. ote Gnaphalium de- 
currens and Asclepias lanceolata, along with Plantago 
ee 8 Soe 
maritima, 
pellucidum, ‘Mx. Cassia chamaecrista spy Uniola, spicata 
f Lin. &. &c. On the beach we find Fucus 
me vesiculosus of Lin.* and adhering to the latter, 
Mytilus striatulus? (Donov. in Rees.) Here also occur 
Venus mercenaria, (common clam) Ostrea edulis ? (oyster) 
and one or two species of 4rca and Anomia, with others 
is arr: 
regular strata. The pebbles rarely exceed two or three 
inches in diameter. 
. Clay. This is a coarse kind, buch’ as is used for mak- 
ing brick; and generally lies above the gravel and beneath 
the sand and mud, or loam. It probably underlies those 
er sandy plains that occurin Suffield and Windsor, 
e West, and in Springfield, Longmeadow, Enfield, 
Fast Windsor, and East Hartford, on the east of the Con- 
necticut. In some places the clay appears at the surface, 
as in Hartford, Windsor, Deerfield, &c. . 
* On Long-Island, filty miles east of New-Haven harbor, I found Sphae- 
cus confervoides, Agardh, 
Vor. VI—No. 1. 11 
