The American Naturalist 



II. Mice : Their Breeding and Bearing for Scientific 

 l\tiona r on 8 the Phytogeny™! Organic Beings. 



IV. Shorter Articles and Discusaion : On Tricolor 

 Hagedoorn. 



CONTENTS OF DECEMBER NUMBER 



n " R e^c C fe°Pr^^rO^Gla8er 0f Biologic * 1 



V. Notea ^ id L ^ ^ l ^ t ^® d : a ^ ot *• ou Ichthyology. 

 VI. Index to Volume XLVI. 



CONTENTS OF JANUARY NUMBER 



L F *He°redityf Professor T. H. Morgan 

 II. Verttc^Igtato^^ 



III. A Family of Spotted; Negroes. Q- I. Simpson 







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