H. Y. Hind on the Laurentian, ete. 347 
is, for producing 
3. That for all modes of application—that is, 
| maximum calorific 
both high and low temperatures—the tota 
mpound condensed submultiple volumes of hydrogen, 
like that in marsh gas, have much less total calorific value in air 
than their volume of free hydrogen. 
5. Condensed compound submultiple volumes of gaseous car- 
bon, like that in olefiant gas, have no greater total calorific value, 
in air below 100° C., than their own volume of carbon gas in 
€ torm of carbonic oxyd; while above 100° C. their value is 
even considerably less. 
Art. XXX VIL—On the Laurentian and Huronian Series in Nova 
Scotia and New Brunswick; by HENRY YouLe Hyp, M.A. 
Contents:—1. Introduction; 2. General Sketch of the Distribution of the Huronian 
and Laurentian Series in Nova Scotia; 3. Sequence of Formations—The Upper 
Silurian; 4. The Lower Silurian; 5. The Gold-bearing Rocks; 6. The Cambrian 
or Huronian Series; 7. The Laurentian Series The Eozoén Canadense ; 
9. Cape Breton Island. 
? 
1. ntroduction. 
= = of course, reach their development only under the most favorable conditi 
eo 5 , case respective 3 : : 
¢Teliminary F Dy dcaiony of New Brunswick: Fredericton, 1865. 
4In southern New Brunswick Prof. Bailey an 
Geol cS urentian an aron. : 2 
ns i ble paper 
_ eology of Southern New Brunswick:” Fredericton, 1865. Also see an abl 
_ by Mr. Mathew in the Journal of the Geological Society of London for 1865. 
