XXIX _ 



Urbana. Illinois ^tate Geological Survey. 



Bull. 15—19. 

 Venedig. L'Ateneo Veneto. 



Anuo 31. Vol. 1. Fase. 2/3. Vol. 2. 32. Voh 1 u. 2. 33. Vol. 

 1 u. 2. 34. Vol. 1. Vol. 2. Fase. 1. 

 Verona. Accad. d'agricultnra, arti e commercio. 



Atti e Meinorie. 

 Washington. Smithson ian Institntiov . 



Anmial Rep. 1909. 1910. 1911. 



Contributionis. Vol. XIII. 6—12. XIV. 2. 3. XV. XVI. 1—7. 12. 

 XVII. 1—3. Index zu 13 u. 14. 

 W a s li i n g 1 n. U. S. National- Miiseiim. 



Bull 50. 5. 71. 73—77. 79. 81. 



Rep. 1910. 1911. 



Proceed. 37 — 44. 

 Washington. National Academy of sciences. 



Memoires 10. 11. 



Rep. of the Secretary. 



Division of chemistry. 



Biv. of Biological survey. 

 Washington. Bepartement of agriculture. 



North Am. Fauna. Yearbock 1910. 

 Washington. H. S. Geological Survey. 



Waater Supply and Irrigation, Paper. 



Professional Paper. 

 Washington. Populär Botany. 



Vot. 

 Washington. U. St. Nat. - Herbar inn?. 



Contributions Vol. XVI. p. 12. 

 Washington. Carnegie Institution. 



1. Selection and Croos-breeding in Relation to the Inheritance- 

 of Coat-pigments and Coat-patherns in Ratsand Quinea-pigs. 

 By Gurdy and Castle. 



2. Mntations.1 Variations and Relation-Ships of she Öenotheras. 

 By Macdougal, Vail and Schull. 



Weimar. Thüring. botanischer Verein. 



Mitteilungen. 28. 30. 

 Wernigerode. Naturwissensch. Verein des Harzes. 



Schriften. 



