1-1906 
The Ohio ^J^aturalist, 
PUBWSHED BY 
The Biological Club of the Ohio State Uni’versity. 
Volume VI. FEBRUARY, 1906. No. 4. 
TABLE OF CONTENTS. 
Berger— Notes on the Fall Webworm (Hyphantria eunea) in Ohio 45S 
ScHAFFNUR— Check List of Ohio Trees 457 
Sterki— Note on List of Ohio Mollusca, and a Sujtge.stion in Regard to Local Fannal 
Lists 462 
Moseley— T he Cause of Trembles in Cattle, Sheep and Horses and of Milk-Sickness in 
People 463 
A State Natural History Survey 471 
ScHAKENER — Sexual and Nonsexual Generations 473 
SUMSTINE— Note on Anthuiais borealis 474 
Metcai.f— Meeting of the Biological Club 474 
NOTES ON THE FALL WEBWORM (HYPHANTRIA CUNEA) 
IN OHIO.* 
E. W. Berger. 
The majority of the observations upon which this paper is 
based were made at Cedar Point, Sandusky, Ohio, during the 
past summer while the writer was at the Lake Laboratory of the 
Ohio State University. The webs of this caterpillar were 
abundant on all sides and those who had spent preceding sum- 
mers at Cedar Point were under the impression that the Web- 
worm was on the increase. After a few days of casual observa- 
tion it was decided to make a more careful study of its habits, 
and, if possible, to determine whether it is double brooded at 
that place. 
While a few specimens pupated in the laboratory during the 
latter part of July, none of them transformed into adults, and no 
positive results were obtained in regard to a possible second 
brood. 
Acknowledgment is due Professor Osborn for his interest 
and generosity with valuable suggestions and facilities placed at 
the writer’s command. 
Food Plants. — The wonns were observed upon the following 
trees: Walnut (Juglans nigra L.), Choke-cherry {Prunus vir- 
giniana L.), Common Wild Black Cherry {Prunns serotina Ehr), 
Willow (Salix sp.). Elm (Ubnus americana L), Box-wood {Cornus 
florida L), Hackberry [Celtis occidentalis L), and Wild Grape 
DC 
♦ -Abstract of paper read December 2. Cincinnati, Ohio State Acad, of Sci. 
i-lBRARY 
NEW YORK 
botanical 
Garden. 
