386 Scientific Intelligence. 
ing evidence of shallow-water origin. An artesian boring at 
New Haven, now in progress by the Winchester Arms Com pany, 
has gone down into the sandstone 1500 feet below the sea-level 
without reaching the bottom of the formation; and, only two 
miles west, the metamorphic schists rise to a height of ‘nearly 400 
feet above the sea. The tro ugh is here, consequently, over 1900 
feet deep, and the pitch into it on this western side is at the rate 
of about 1009 feet a mile; and it may prove to be much greater 
when the artesian Doring has gone down its next proposed 1000 
feet. The maxim m depth along the center of the trough may 
reatly exceed the y aepth near New Haven, whatever the amount. 
The valley in its independent movements, and its relations to the 
mountain-making disturbances of oe ped has nothing to favor 
the idea of any connection with that of New Jersey in the Tri- 
assic bey unless possibly through en Lata Sound; and this, 
if a fact, would not be of the kind implied in Professor Cook’s 
bipothedte J. D. D. 
2. Life of Sir William E. Logan, Kt., LL.D., F.R.S., F.GS., 
etc., First Director of the Geological ‘Survey of Canada, by Ber- 
warp J. ARRINGTON, Ph.D., Professor of Mining in McGill 
University, late Chemist and Mineralogist to the Geological Sur- 
merica; and his peau bad roved to have the best of “est 
ities; they stand, and American Geological Science is being built 
upon t them. The “ Azoic rocks” had been che ra ro el 
schistose rocks, and trace out # ante th map t e folded strata of lime- 
stone they include, so as to give intelligible shape to these bottom 
terranes of the geological series. 
e Green Mountains, and the country subordinate to them on 
the west with the included Taconic range, had pre eviously been 
jous 
upturned beds; ae he ended in Pein in his dg tr: the 
Lower Silurian age of the main system of beds, the Taconic group 
included, and their Onainda' deere to the meet te mire 
é 
RL BLE Me Tn os ORS oe TS | 
