Chemistry and Physics. 375 
Strongylocentrotus Dribachiensis A. Agassiz. Spines only. 
Arctic Ocean to New Jersey; cireumpolar; low-water to 430 
fathoms. Post-pliocene of Maine and northward 
List of Species found in both Shell-beds. 
Lower Bed. Upper Bed. 
One. 
Urosalpinx cinerea Common. e 
Tritia trivittata Few. Common. 
Tlyanassa obsoleta ...........--- Few. Few. 
Crepidula fornicata _...._._..__-_- Abundant. Few. 
epi plana Common. Few. 
Ensatella Americana...___. ..--- . Abundant. Few. 
Mya arenaria Abundant. Few. 
i arctic ‘ew. Common 
mer Abundant ‘ew. 
Scapharea transversa._......---- Abundant Few. 
Mytilus edulis Ww Common. 
Crenella glandula ew. Several, large. 
Ostrea Virginiana Abundant Few. 
SCIENTIFIC INTELLIGENCE. 
I. CHEMIstry AND PHYSICS. 
1. On Trimethyl-carbinol, and its supposed occurrence among 
the Products of Fermentation.—In examining a crude fusel oil, 
ed m 
obtained fro a tory of potato-spirit, which contained 
mes small quantity of amy] alcohol, Frevnp conve e 
‘sobutyl alcohol, boiling between 107° and 110°, which was 
Supposed, that as Butlerow has stated, this tertiary alcohol was con- 
