278. 
A list of Ohio spiders (now in press): W. M. 
BARROWS. 
A preliminary survey of the Protozoa of Mirror 
Lake on the Ohio State University campus: MABEL 
E. STEHLE. 
Application of colloid chemistry to nephritis: 
Haze C. CAMERON. 
Reaction time in the blind and the deaf: A. M. 
BLEILE. 
The effect of radiwm radiations on the germ 
cells of Drosophila ampelophila: W. M. BARRows. 
Studies on vaso-motor balance: CuyDE BROOKS, 
Cuayton McPEExK and R. J. SEYMOUR. 
Note on the catalase content of the turtle heart: 
R. J. SEYMOUR. © 
Pneumococcus types: CARL L. SPouR. 
The cancer problem: ERNEST Scort. 
Behavior of the X-chromosomes in Branchipus 
vernalis: R. C, BAKER. 
Work of the Plant Disease Survey, U. S. D. A., 
in Ohio: A. D. SELBY. 
Characteristics of the eruption of Katmai as in- 
dictated by its effect on vegetation: Rospert F. 
GRIGGS. 
The Lecideacee of Ohio: Bruce FINK. 
Interesting ascomycetes: BRUCE FINK. 
A revised course for secondary botany: BLANCHE 
McAvoy. 
Inland associations of alge: E. N. TRANSEAU. 
Regeneration studies of Bryophyllum: CHARLES 
W. McIntyre. 
Effect of hairy coverings on transpiration: 
JASPER D. SAYRE. 
Succession of prairies: Homer C. SAMPSON. 
Effect of seed treatment for smut on germina- 
tion: WILMER G. STOVER. 
The indicator significance of plant associations 
im crop distribution in the United States: ADOLPH 
WALLER, 
Vegetatwe reproduction of the pinnatifid spleen- 
wort: CLARA G. MARK. 
An apple root fungous disease: Harry W. Lutz. 
An electric drying oven for plant presses: HE. 
Lucy Brawn. 
Some land forms of central southern Ohio: 
Lewis G, WESTGATE. 
Fossils of the Greenfield (Ohio) dolomite and 
where to find them: C. W. NappeEr. 
Moulding sands of Ohio: J. A. BOWNOCKER. 
Effects of the Wisconsin glacier on a portion of 
the Whitewater valley in Indiana: W. M. TucKER. 
Some especially interesting new species of Rich- 
mond fossils: W. H. SHIDELER. 
SCIENCE 
[N. S. Vou. XLVIII. No. 1237 
Effect of transverse magnetic field on some of 
the physical properties of nickel wire: A. A, AT- 
KINSON. 
The magnetic-mechanical analysis of cast tron: 
Samuryt R. WILLIAMS. 
DEMONSTRATIONS 
Specimen of a dermoid cyst with teeth, loaned 
by Dr. H. Moore, Oxford: StEPHEN R. WILLIAMS. 
Leaf hoppers of Hawaiian Islands: HERBERT 
OSBORN. 
One-eyed frog (Acris gryllus): FE. H. KRECKER. 
Laboratory table tray: F. H. Krecker and W. J. 
KostTir. 
Colony forms in marine Bryozoa: Raymonp C. 
OSBURN. 
Exhibit of Greenfield (Ohio) Dolomite fossils: 
C. W. NAPPER. 
Two new varieties of Acer rubrum: FREDA 
DETMERS. 
A collection of Ohio spiders; a method of exhib- 
iting spiders; nest of folding-door spider: W. M. 
Barrows. 
A vaso-motor balance: CuyDE Brooks, CLAYTON 
McPexrk, R. J. SEYMouR. 
Models of embryonic skull of Humeces: EDWARD 
L. RICE. : 
Sections of nasal capsule and olfactory nerves of 
embryonic Cumeces: EDwarpD L. RICE. 
X-chromosomes of Branchipus vernalis: R. C. 
BAKER. 
Origin of, cartilage from ectoderm im the uru- 
deles: F. Li. LANDACRE. 
Specimens and photographs from the Valley of 
Ten Thousand Smokes: Ropert F. GRices. 
Epwarp L. RIcr, 
Secretary 
DELAWARE, OHIO 
SCIENCE 
A Weekly Journal devoted to the Advancement of 
Science, publishing the official notices and pro- 
ceedings of the American Association for 
the Advancement of Science 
Published every Friday by 
THE SCIENCE PRESS 
LANCASTER, PA. GARRISON, N. Y. 
NEW YORK, N. Y. 
Entered in the post-office at Lancaster, Pa., as second class matter 
