JOL. XLII, NO. SOS 



THE 



AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 

 DEVOTED TO THE NATURAL SCIENCES 

 IN THEIR WIDEST SENSE 



Further Studies on the Activities of Araneads. Professor THOS. H. 



30MEKY, Jr 



1 the Daily Life and Food of Cambarus Bartonius Barton! . FLOYD 



Some Points in the Ecology of Recent Crinoids. AUSTIN HOBART CLARK. 717 

 Shorter Articles and Correspondence : Evolntionjwithout Isolation : O. F 



Cook. A Note on the Silverside : John Treadwell Nichols . . .727 

 Notes and Literature : Botany-The Origin of a Land Flora, Professor 

 Douglass Houghton Campbell. Plant Oyflogy-Avog&mr in the Ferns, 

 Dr. Bradley M Davis. Experimental ^^W-Rej^eratlon in Lumbri- 

 culus Sergius Morgulis. The Budgett Memorial Volume- John Samuel 

 Bnd^-u, I'rfsiuknt Davip maks; jmuMN. Aninaif Behavior - M^nd ; n 

 Animals, Professor H. S. Jennings 7 3 » 



THE SCIENCE PRESS 

 LANCASTER, PA. GARRISON, N. T. 



NEW YORK : SUB-STATION 84 



