260 The American Geologist. October, 1892 
gators of the United States, as: Dr. Samuel Morton, Vanuxem, Conrad, 
Emmons and Leidy, are entiiely passed over, in Mr. Williams' address. 
The use of paleontology for assimilation, synchronism and classifica- 
tion in geology, requires special talent, good judgment and an amount of 
practical knowledge which are seldom combined in one man; and this 
explains why so many observers fail to give good correlation and exact 
classification, notwithstanding their long and patient researches in pale- 
ontology, Jules Marcou. 
Cambridge, Mass., Sept. 22, 1892. 
PERSONAL AND SCIENTIFIC NEWS. 
The Sixth International Congress of Geologists is to be 
held at Zurich in August, 1894. A preliminary circular, signed 
by professous Renevier, Heim and GoUiez.has alread}^ been issued, 
together with a brief Proces-verbal of the meeting held on the 
3d of August, 1891, at Salzburg, which was concerned with cer- 
tain European maps. Considering the nature of their country the 
Swiss geologists are arranging two kinds of excursions, some 
across the Jura and the Alps for "those accustomed to long 
walks'" and others for the less sturdy, during which steamboats, 
railways and other conveniences will be utilized. Full particulars 
will be furnished later. The meetings will be held at Zurich, but 
the excursionists will reassemble at Lugano for the final meeting 
of the session. 
The Annual Report of the Lausanne Natural History 
Museum, of which Prof. Renevier is keeper, shows the important 
accession of a large collection of Triassic fossils made by the pro- 
fessor himself at Hallstadt. Prof. Renevier, as may be seen 
above, is one of the committee on the next International Congress 
of Geologists. 
The professorship of Geology and Mineralogy, at Bres- 
lau, left vacant by the death of the late professor F. A. Roemer, 
will be divided. The Professor Ordiuarius will occupy the chair- 
of Petrology and the Professor Extraordinarius will have charge 
of the department of paleontology. It is considered probable 
that Dr. Fritz Freeh of Halle, one of the leaders of the younger 
school of German geologists, will receive the latter. Dr. Freeh 
is well known as the monographer of the Triassic Corals and as a 
writer on past zoological distribution. 
Mr. F. a. Bather contributes a paper to the last report of 
the "Museums Association" on the fossil crinoids in the British 
Museum, in which he describes his attempt to put into practice 
Dftodern ideas of museum arrangement. He accepts as his rule 
