VOL. XLI, NO. 489 



SEPTEMBER, 1907 



THE 



AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 

 DEVOTED TO THE NATURAL SCIENCES 

 IN THEIR WIDEST SENSE 



CONTENTS 



I. The structure of Cilia, especially in Gastropods . LEONAB 



II. The Poison Glands of Noturus and Schilbeodes . . HUGH DANIEL REED 6S3 



III. The Structure of the Silk Glands of Apanfehs glomeratus L. 



EOBEBT MATHESON and A. G. EUGGLE8 667 



IV. The Kest of the Kelp Fish CHAKLES F. HOLDEB 687 



V. Notes and Literature: General Bio fogy; Specific chanicters in curly enibiTy-os. 



births.— Recent public;ition.s concerning the structure of insects.— 

 Stridulation rhj-thm of crickets.— Notes. Botany; Plant geography. ~ 



VI. Publications Received 



BOSTON, U. S. A. 

 GINN & COMPANY, PUBLISHERS 

 29 BEACON STREET 

 New York Chicago London, W. 0. 



