FOEEIGX INTELLIGENCE. 
G3 
been made for tbe whole kingdom, and those of the second order have 
been completed for the province of Madrid. The maps are on the scale 
of ToT)o for tlie country, and for cities. The geoloj^ical department has 
completed its work in the provinces of Burgos, Santander, and Madrid ; 
and those of Leon, Zamora, and Avita. are in progress. 
The Transactions of the American Philosophical Society, vol. xii. (parts 
i. and ii.), contains the " Geoloijy and Natural History of the Upper j\Iis- 
souri," with a map, by Dr. F. Y. Hayden. In the ' Journal of the Phila- 
delphia Academy ' (vol. v., part ii., October, 1862) there is a Monograph of 
the Fossil Polyzoa of the Secondary and Tertiary Formations of Zsorth Ame- 
rica," by Mr. Gabb and Dr. Horn, with beautiful lithographic plates by 
Ibbotson ; and an article on the ''^evr Unionida? of the United States and 
Arctic America," by Mr. Isaac Lea. The number of species described or 
known to exist were stated by Mr. Lea, in 1860, as, — Unio 465, Jfargari- 
tacea26, Anodonta .59, =550 ; to which he added, as not described, 30 in 
his own cabinet, 36 from Xorth America, Mexico, Honduras, and Central 
America, and 1 from Canada ; in all 617. Since then he has produced the 
above, and a previous paper containing further additions. 
Professor Dana's ' Manual of Geology ' has appeared (Triibner, 1863, 
Svo. pp. 812). It treats the science with special reference to American Geo- 
logical History, for the use of colleges and schools of science. The work 
is divided into four parts : — I. Physiographic ; II. Lithological ; III. His- 
torical ; and IV. Dynamical Geology. 
The ' Canadian ISTaturalist ' for October contains a letter " On the Catt- 
skill Group of 2s^ew York," by Professor James Hall. Late investigations, 
he says, have forced upon him the conviction that the greater part of the 
area coloured on the Geological Map of New York as Cattskill Group is 
in reality occupied by the Portage and Chemung Groups. Several years 
since, in making sections across the countr}- from north to south, and 
through the counties of Albany and Schoharie, he ascertained that the 
Hamilton Group, as indicated by its well-marked and characteristic fossils, 
extends to the southern limit of the colouring indicating the Chemung Group 
on the Geological Map. He is prepared to show now that the Hamilton 
Group in the counties of Albany, Greene, Schoharie, Otsego, and a part 
of Chenango, with the exception of some outlines on the higher hills, oc- 
cupies nearly the entire belt coloured as Chemung, the southern line cor- 
responding very nearly with the limit assigned to that formation ; thus 
leaving the Chemung Group, with its southern limits, still unassigned. 
Lentil within a few years, the State collection had been nearly destitute of 
fossils from the rocks of Delaware county, according to the map, CattskiU 
Group. Some time since, Professor Orton, of the Normal School, Albany, 
sent specimens which were recognized as characteristic of the Chemung 
Group ; but as it was possible they might have been derived from trans- 
ported masses, no decision was come to. More recently, Mr. J. M. Way, 
of Franklin, Delaware county, has found fish-remains in considerable 
abundance ; from loose and scattered masses he has traced the specimens 
^to their position in the hill-slopes, and has ascertained the existence of no 
*less than three distinct beds containing these ichthyic remains. Asso- 
ciated with these, he has found numerous shells typical of the Chemung 
Group. Professor Hall describes these strata and their contents in detail. 
There is also a letter by Colonel E. Jewett on the same subject. 
Mr. Roff, C.E., of Montreal, read before the Natural History Society, 
in November, a paper " On the Superficial Deposits of Canada." On this 
subject Dr. Dawson, in Lower Canada, has made many valuable contribu- 
tions ; and in the Upper Province, Professor Chapman, of Toronto, and Mr. 
