VOL. XLII, NO. S04 



DECEMBER, 1908 



THE 



AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 

 DEVOTED TO THE NATURAL SCIENCES 

 IN THEIR WIDEST SENSE 



THE SCIENCE PBES8 

 LANCASTER, PA. GARRISON, N. T, 



NEW YORK : SUE STATION 84 



