386 A Review of the Progress of North American  [April, 
has lost two of its most eminent students, Professor Oswald Heer, 
of Zurich, whose descriptions of the cretaceous dicotyledons of 
Nebraska and of the arctic flora, assure him a prominent place 
among the pioneers of American paleontology ; and Mr. Joachim 
Barrande, whose publications of a number of our -older fossils 
also entitle him to a prominent place in the history of the progress 
of North American palzontology. 
At the meeting of the American Association for the Advance- 
ment of Science for 1883, a number of paleontological papers 
were read, of which brief notices appeared in Science, Vol. 1, No. 
31. Professor James Hall read a paper entitled “ Preliminary not 
on the microscopic shell structure of the paleozoic Brachiopoda” 
Professor J. W. Dawson read a paper on “ Rhizocarps in the paleo 
zoic period.” Mr. E. W. Claypole read a paper on “ Rensellaeria 
and a fossil fish from the Hamilton group of Pennsylvania,” be 
also read a paper on “A large crustacean from the Catskill grou? 
of Pennsylvania.” 
H. Booth, in the American Journal of Science, for Novembet 
has a note on the “ Discovery of Utica slate Graptolites on the 
west side of the Hudson.” ished 7 
S. Calvin, in the Amer. Journ. of Science, for June, publ i 
an article “On the fauna found at Lime creek, Iowa, and a l 
lation to other geological faunas.” In this article he points ws l 
a few errors made by Professor. H. S. Williams, in the Amer. oe 
of Science, for February, on “ The fauna at the base of the S 
mung group, in New York.” Mr. Calvin, while admitting oe | 
similarity of the Lime creek fauna with that of High Point : 
considers their equivalency very doubtful. er 
John M. Clarke, i in she ne Journ. of Science, for ae | 
published a paper on “ New discoveries in Devonian ¢ i: wi 
E. W. Claypole, in the AMERICAN NATURALIST, ye ‘ao 3 
3, published a paper “ On the occurrence of fossiliferous 5“ a 
the lower Ponent (Catskill) group of Middle Pennsy cat | 
J. W. Dawson, in the Canadian Naturalist and Qua 
nal of Science, Vol. x, New Series, No. 7, has a “ 
notice of new fossils from the Lower Carboniferous ° 5 t 
Nova Scotia and Newfoundland,” in which there 
of six new species from Nova Scotia, and of w 
foundland. In No. 8, of the same paper, Pr 
a “ Notice of graptolites of the Quebec group, 
James Richardson for the Peter Redpath museum.” 
