62 Screntifie Intelligence. 
peroxide of hydrogen (1818-187 8), paves dd a 784-1880), spees 
of chemical reactions, starch sugar, peroxide of hydrogen, diction 
-ary of the action of heat u upon certain mptatlin te including an 
index to the principal literature upon the subje 
The committee also announces that indexes ie been offered, 
age ublish Indexes to A gap Literature which shall be endorsed 
by this, committee. he Smithsonian places a limit to the num- 
ber of pages which will be printed per annum, but the limit is a 
generous one. By thus securing the assistance of the Smithso- 
nian Institution, chemists are assured of a reliable and authorita- 
York C 
II, Grotoagy AND MINERALOGY. 
Geology of the Scottish Highlands.—The important paper 
of Prof, Archibald Geikie, Director of the Geological Survey of 
Great Britain, reprinted from Na ture, of Nov. 13, on pages 10 to 15 
of this number is followed bya special report on the Geology of the 
Northwest of Sunderland by the geologists of the iy whose 
work called forth that paper, Messrs 8 N. Praca and Joun 
Horne, the former in charge of the investigation. The results, 
facie ‘settli ing a question in Scottish eology that has been long 
under discussion, illustrate a principle in geological d namics, that 
of PRAY thrust in great displacements, which is of 
importance. We cite the stratigraphical section of the report, 
with a few accompanying igs eae Raia ng to the original 
article in Nature for the rest of the 
‘*‘As the observer passes eastward a ae the magnificent quartz- 
ite sections on Crag Dionard and Conamheall, south of Loch 
Eriboll, he cannot fail to note the numerous flexure of the strata, 
of thei 
As a rule, the eastern limb of each of these folds di ips at a gentle 
angle to the southeast, while the west limb is highly festined? 
vertical, even inverted, or sometimes broken by a reversed fault, 
The 
