CIENCE 
EDITORIAL CoMMITTEE: S. NEwcoms, Mathematics; R. 8. WoopWARD, Mechanics; E. C. PICKERING 
Astronomy; T. C. MENDENHALL, Physics; R. H. THuRSTON, Engineerin 
ig; IRA REMSEN, Chemistry; 
J. LE ContE, Geology; W. M. Davis, Physiography; O. C. MARsH, Paleontology; W. K. Brooks, 
C. HART MERRIAM, Zoology; 8. H. SCUDDER, 
Entomology; C. E. Brssry,ZN.?L.EBRITTON, 
Botany; Henry F. OsBorNn, General Biology; C. S. Minot, Embryology, Histology; 
H. P. BownpitcH, Physiology; J. S. BrLtinas, Hygiene ; J. McKEEN CATTELL, 
Psychology; DANIEL G. BRINTON, J. W. POWELL, Anthropology. 
Fripay, NovEMBER 5, 1897. 
CONTENTS: 
The Geological Congress at St. Petersburg: JOHN J. 
SDHVENSONa-seasaraceeenenseesanarssesei ces atecmessccass 673 
A New Investigation of Man’s Antiquity at Trenton, 
J; Henry C. Mercer; JJ: ARTHUR HOLLICK..675 
Diversity of Languages: RICHARD T. COLBURN...682 
Geology and Geography at the American Association 
for the Advancement of Science: C. H. SMYTH, JR..688 
Geological Society of America: C. H. SmytH, JR..691 
Regeneration in Oligochaete Worms.........+...00s.e0++ 692 
The Survey of the Forest Reserves: W.F. MORSELL..694 
Current Notes on Anthropology :— 
Maya Day Symbols; The Viking Club: D. G. 
IB RIGNILO Neeeeastreesacreeecssestaesteesatasceestensnensctictees 695 
Botanical Notes :— 
A Model Natural History Survey Bulletin; The 
Useful Fiber Plants of the World: CHARLES E. 
ISTSSTINY cog cccanooconosaona sasncoqnosnosacoHinosscncsonsaoscned 696 
Scientific Notes and News :— 
Report of the Secretary of Agriculture; Geological 
Survey of West Virginia; The New York Zoolog- 
ical Park ; The International Leprosy Conference ; 
(CLTEIT sosronecneancoceenocsoceadoaonee spol BSI7/ 
University and Educational News. 
Discussion and Correspondence :— 
Organie Selection: THOMAS DwiGHT. A Gasoline 
Launch for Field Work: G. D. HARRIS.......... 703 
Scientific Literature :— 
Born on Verwachsungsversuche mit Amphibien Lar- 
ven: CHARLES 8. Minor. Natural History of 
the Concise Knowledge Library; Citizen Bird: 
C. H. M. Cooke’s Birds of Colorado: W. H. 
(QEEOWID) ccosnssos seoosnonsotosececeonanespoupnnonenoeoeancéoce 704 
Societies and Academies :— 
The Biological Society of Washington: F. A. Lu- 
cAS. University of Wisconsin Science Club: WM. 
Sb wi TARHIS}2 UNI Dponaccoadcoanasadnsa:eacacpesuopounsocanecco 
Scientific Journals. 
IMAI TEXCO) GS cascosoneccioconosccoscocomnacnonencagnos yoecasooaoNeS 
MSS. intended for publication and books, etc., intended 
for review should be sent to the responsible editor, Prof. J. 
McKeen Cattell, Garrison-on-Hudson, N. Y. 
THE GEOLOGICAL CONGRESS AT ST. PETERS- 
BURG. 
THE Seventh International Geological 
Congress convened at St. Petersburg, 
Russia, on August 29, 1897, in accordance 
with the Czar’s invitation, presented at the 
Fifth Congress in 1891. 
The enrollment far exceeded that of any 
previous Congress, the preliminary list 
showing 966 names, of which only 270 were 
of Russians. The final list has about 1,100, 
about 120 of them being American. 
The arrangements were upon an imperial 
scale. Free transportation on all Russian 
railroads was provided not merely for the 
members, but also for their families. Ex- 
cursions were given such as no other Con- 
gress can expect, unless, indeed, another 
meeting be held in Russia. A guide book 
of 660 pages, with many maps, plates and 
sections, was prepared, giving detailed infor- 
mation respecting the geology of regions to 
be visited, a most valuable contribution to 
geological literature, making accessible, to 
geologists all over the world, facts pre- 
viously published for the most part only in 
proceedings of scientific societies and sealed 
up in the Russian language. 
Three excursions preceded the Congress. 
That to the Ural Mountains, shared in by 
somewhat more than 200 members, was in 
charge of Dr. Tschernychew and lasted for 
four weeks. This, extending beyond rail- 
road and all other ordinary means of trans- 
