SCIENCE 
————— SSS 
Fripay, Marcu 22, 1912 
CONTENTS 
Investigations of the Carnegie Institution .. 437 
Charles X. Dalton: GEO. W. ROLFE ........ 444 
The Second International Congress of Ento- 
MOUOGY socoasosacsaconooooooacoson000es 446 
Antarctic Explorations .............. wee. 447 
Scientific Notes and News .............++. 447 
University and Educational News .......... 451 
Discussion and Correspondence :— 
Number of Students per Teacher: JOSEPH 
PETERSON. Are Teachers entitled to Com- 
plimentary Desk Copies of Technical 
Works: Dr. V. KARAPETOFF ............. 452, 
Scientific Books :— 
Brown’s Melanesians and Polynesians: Dr. 
WALTER HoucH. Hurter on the Herpetol- 
ogy of Missouri: RayMoND L. Ditmars .. 454 
A Remarkable Journey across the Sahara: 
RW Als CANINONI EH siepelayedei2 cucyscnieye) sroneieve ete 455 
Botanical Notes :— = 
Supplement to Engler and Prantl’s Alge; 
Notes: PROFESSOR CHARLES H. BESSEY ... 456 
Special Articles :— 
The Accumulation of Oil and Gas in Sand- 
stone: Dr. ROSWELL H. JOHNSON ....... 458 
The American Society of Zoologists: PrRo- 
FESSOR JOHN H. GEROULD .............. 459 
The American Institute of Chemical Engi- 
MEGES IDR, Io Cy OUBANT Soascascoaooesved 475 
MSS, intended for publication and books, etc., intended for 
veview should be sent to the Editor of Scrence, Garrison-on- 
Hudson, N. Y. 
INVESTIGATIONS OF THE CARNEGIE 
INSTITUTION + 
THE past fiscal year has been, on the 
whole, the most fruitful year on record for 
the ten specially organized departments of 
research in the institution. Although some 
of these are not yet fully equipped, they are 
all so well organized and provided for that 
their energies may now be chiefly directed 
to the attainment of definite results. 
A development of much interest in con- 
nection with these departments is that of 
cooperative effort coming through research 
associates and collaborators. The depart- 
mental facilities are already in considerable 
demand from capable investigators, and 
many of them are found desirous of using 
these facilities, not only to forward their 
own researches, but to collaborate in the 
researches proper of the departments. The 
favorable experience which has accrued in 
recent years in these matters indicates that 
it may be advantageous in the future to 
seek to secure an additional number of 
investigators who, by reason of their emi- 
nence, may collaborate effectively in this 
manner. 
Each of these departments has now under 
way such a variety and complexity of work 
that it is difficult to summarize. Reference 
must be made, therefore, for matters of 
detail, to the reports of the directors of the 
departments, published in full in the cur- 
rent year book. Hence such allusions in the 
following paragraphs as are made to the 
progress of the year are necessarily brief 
and ean deal only with the more salient 
1From the Report of the President, Dr. R. 8. 
Woodward, for the year 1911. 
