386 The American Geologist. J""^, 1903. 
It is not probable that either geologists or physicists will approve 
this theory, which is a contribution by a layman to the already large 
number of attempts to explain the wonderful climatic changes causing 
and ending the Ice age. Like the carbon dioxide theory, it has a some- 
what near relationship with the more simple explanation that has been 
advocated by tiie present reviewer, namely, elevation of continental 
areas as high plateaus above the snow line, and, when they became 
heavily loaded with ice-sheets, their depression beneath that weight, 
accounting for the Champlain epoch and the end of the Glacial period, 
excepting in the Arctic and Antarcfic regions. w. u. 
Existence du Crctace iiiferieiir en ArgoJidc Grece — Existoice dii Jur- 
assique sup. et de I'infracretace dans I'isle de Crete — etc., etc., par 
L. Cayeux [Comples Rendus de I'Academie des Sciences, Paris, 
1903]- 
These are preliminary notes on observations made in Greece and 
the island of Crete on the Mesozoic rocks appearing in that part of 
the Mediterranean. The structure of the terranes in its overturned 
group is compared with that of tjie southern Tyrol. An interesting 
discovery is that of a radiolarian ooze in the Argolid which he thinks 
has affinities with radiolarians oi the Neocomian in the Tyrol. 
In Crete the composition of the beds is very varied, running from 
fine-grained calcareous sandstones to coralline limestones, clays, schist 
and jaspery beds; the fragmentary rocks take on the appearance of 
Hysch. Several localities for io'ssils were found, brachiopods and 
corals predominating; there are also sea-urchins. 
One note is given to a description of the rocks connected with vol- 
canic eruptions of the Mesozoic time. Intrusive rocks predominate, 
and are both basic and acid. The author remarks that the "eruptive 
rocks metamorphosed the upper terranes among which they are in- 
cluded, and have left absolutely intact, the more recent terranes on 
which they repose" [as effusives]. 
He further remarks that the great quaternary subsidences of the 
Egean sea and this concomitant only represent the last episodes of the 
phenomena, the first manifestations of which go back to Jurassic times. 
G. F. M. 
MONTHLY AUTHOR'S CATALOGUE 
OF AMERICAN GEOLOGICAL LITERATURE 
ARRANGED ALPHABETICALLY. 
ADAMS, GEO. I. 
Zinc and lead deposits of northern Arkansas. (U. S. G. S. Bull. 
No. 213, Ser. A, 1902, pp. 187-197.) 
ALDEN. WM. C. 
The stone industry in the vicinity of Chicago, 111. (U. S. G. S. 
IBull. No. 213, Ser. A, 1902, pp. 357-361.) 
