154 Scientific Intelligence. 
tions on the purposes of the embryonic Sheaths of cto and 
their bearing on the origin of the siphon in the Ortho 
9. Petroleum in the Northwest yt lstadand of British Area, 
on the Athabasca and elsewhere.—A r on this subject, by Dr. 
R. Bell, is contained in the Beceeudings of the Canadian rex Site 
new Ser., i, 225, 1882. 
10. Traité de Géologie par A. de Lopparmt Ancien Ingénieur 
au Corps des Mines, Professor 4 l'Institut Catholique de Paris. 
v e L 
rent, the associate of Delesse he preparation of his annual 
Revue de Géologie, is now in course of publication, only 480 
pages ng thus far reached this country. This portion, 
scheme, and so far as completed, the work promises to be quite 
full and thorough in its treatment of its subjects. After a gen- 
eral introduction, it takes up “ Terrestrial oil daa 3 ” under 
the heads of morphology proper and phy n which are 
presented many details from senrceains physics. eBook Second 
on the title “External Terrestrial pe ina ere ” and renisaite- to 
treatise largely from his own country, yet ranges viety also for 
illustrations of the subjects. 
11. JSelly-like Hydrocarbon from Scranton, Pennsylvania. —The 
Loait Sage carbonaceous mineral, resembling do opplerite, the occur- 
V in a peat bog at Scranton, Pennsylvania, was 
descr ihed ir Mr. T. Cooper, (see this Journal, December, 1881, 
veins in the mathe at sli Ssten of the peat bog. It is lack in 
color, and when first taken out it is jelly-like in consistency. On 
exposure to the air it becomes tougher and elastic, somewhat like 
India-rubber. When in this condition a thin slice can be cut by 
a knife; it is then seen to be ssouahonns red by transmitted light, 
and nearly homogeneous. When completely air-dried it is brittle 
and nearly as hard as coal and resembles jet, having a brilliant 
resinous luster and conchoidal fracture; its specific gravity 18 
1-032. Before drying it burns slowly i in a Bunsen burner and 
without flame, but when dry it burns with a clear, yellow flame. 
It dissolves partly i in hot alcohol, but wholly in caustie potash, 
even in the cold. An analysis by Mr. J. M. Stinson, of the Penn- 
sylvania Geological Survey, of material dried at 100° C. ae 
Cc H N 0 Ash 
28°99 517 2°46 56°98 6'40=100°00 
Analysis of the dry separated material gave— 
