506 Scientific Intelligence, 
gneisses of New England are mainly of pre-Silurian age,” would, 
according to the writer’s observations, be more nearly correct if a 
such metamorphic rocks as are not known by stratigraphical evi- 
dence to belong to this division, or to any of those higher in the 
series, had been left without color, the map would have been more 
satisfactory. The Huronian cannot be told by lithological tests, 
and the Huronian areas, so made, that have any other basis than 
; lithological are very limited, and would have been sufficiently 
distinguished by lining. 
But the metamorphic areas are only a very small part of the 
formations represented. The chart also gives the outlines, more 
or less well ascertained, of the areas of eruptive rocks in the west ; 
the southern limit of Glacier phenomena east of the Rocky Mount: 
ains, from Newberry, and the courses of what sha been called 
terminal moraines—which, for the most par rt, are far from corres- 
ponding with the most southern Glacier limit, Ne therefore are - 
as far from the southern line along which true terminal morain 
might be looked for. 
As to artistic merit, the chart has Ser eeied disappointing 
expectation. si co olor ors “hte been selected and grouped without 
system or judgm and are put on ee by the chromo-litho- 
graphic process, i ‘ooareely by hand, and the effect is both un- 
pleasing and Come sin ee Plata the sheets (of which the chart 
is made up) jo on one is sometimes cut short off in- 
stead of baviog © a ‘goueheaasion of the color on the other. ‘Still the 
chart will be of much service to geologists and in the geological 
lecture aro 
3. Report on the Geology of Southern New Brunswick, 1878- 
1879; by Professors L. W. Batrey, G. L Marrarew and R. W. 
Ets. Geological Survey of Canada. 26 pp. 8vo. Montreal, 
1880. (Dawson Brothers).—This report contains the aaits of 
geological observations in the counties Charlotte, Sunbury, 
Queens, Kings, St. John and Albert. It is accompanied by a geo- 
logical map of Southern New Brunswick in three parts which out 
of the four are issued. The map is printed sag sagt and 
effectively in colors, and shows excellent progress by the geolo- 
gists of the State h in res work. There is also a large sheet of 
5 Bette tee enn but with too many doubtful points among 
n all cases easily understood or ering) inter- 
oa Caret ul a of the strike an ad dip at each and 
and Go.) —This text-book is devoted to a discussion of the gen- 
eral principles of crystallography, and physical and chemical 
mineralogy; the descriptive mineralogy is to follow in a compan- 
