54 CARNEGIE INSTITUTION OF WASHINGTON. 



Wilson, E. B. Recent researches on the determination and heredity of sex. (Science, 



n. $., V. XXI, No. 732, pp. 53-70- Jan. 8, 1909.) 

 . Note on the chromosome-groups of Metapodius and Banasa. (Biol. Bull., v. 



XII, No. 5. April, 1907.) 



The chromosomes of Metapodius: a contribution to the hypothesis of the 



genetic continuity of chromosomes. (Jour. Exper. Zool., v. vi. No. 2. Feb., 1909.) 

 Wilson, J. H. See Richards, T. W. 

 Wright, Fred E. Das Doppel-schrauben-mikrometer-okular und seine anwendung zur 



messung des winkels der optischen achsen von krystall-durchschnitten unter dem 



mikroskop. (Tschermak's Mineral, u. Petrog. Mitteilungen, Bd. xxvii, Heft 4. 



1908.) 

 . Artificial daylight for use with the microscope. (Amer. Jour. Science, v. xxvii. 



No. 157- Jan., 1909.) 

 . (Dn three contact minerals from Velardeiia, Durango, Mexico (gehlenite, 



suprrite, and hillebrandite). (Amer. Jour. Sci., v. xxvi. Dec, 1908.) 

 . A telemeter with micrometer-screw adjustment. (Amer. Jour. Sci, v. xxvi. 



Dec, 1908.) 



