VOL. XIII, HO. 489 



JULY, 1908 



THE 



AMERICAN 



NATURALIST 



A MONTHLY JOURNAL 

 DEVOTED TO THE NATURAL SCIENCES 

 IN THEIR WIDEST SENSE 



CONTENTS 



I. A New Mendelian Ratio and Several Types of Latency. Dr. GEORGE 



HARRISON SHTJLL 43S 



II. The Leg Tendons of Insects. Professor C. W. WOODWORTH . . .452 

 m. Abnormal Incisors of Marmota Monax L. CHARLES A. 8 HULL .457 

 IV. A Note on the Coloration of Flethodon Cinerens. HUGH DANIEL REED . . 460 



V. Some Experiments on the Order of Succession of the Somites in the Chick. 



Professor MARIAN E. HUBBARD 466 



VI. Dwarf Faunas. Professor HERVEV W. SHJJHER 472 



VII. Notes and Literature : Ichthyology— life History of the Eel, Professor Charles 

 A. Kofoid; The Valves in the Heart of Fishes, President David Starr 

 Jordan ; Parasitolagy—Tbe Hereditary Transmission of Germ Diseases ; 

 A Society for the Destruction of Vermin, H. B. W. Plant Cytology- -Polar 

 Organization of Plant Cells. Dr. Bradley M, Davis 481 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISON, N. T. 



NEW YORK : SUB-STATION 84 



