XIV MAINE AGRICULTURAL EXPERIMENT STATION. 



No. 53. On the Correlation between the Number of Mammmae of the 

 Dam and Size of Litter in Mammals. II. Intraracial Cor- 

 relation in Swine. By Raymond Pearl. Proc. Soc. for 

 Exp. Biol, and Med., Vol. XL, pp. 31-32. 



No. 54. On the Results of Inbreeding a Mendelian Population : A 

 Correction and Extension of Previous Conclusions. By 

 Raymond Pearl. American Naturalist, Vol. XLVIIL, pp. 

 57-62. 



No. 55. Variation in the Tongue color of Jersey Cattle. By Raymond 

 Pearl. Proc. Soc. for Promotion of iVgricultural Science, 

 1913- 



No. 56. Studies on the Physiology of Reproduction in the Domestic 

 Fowl. VI. Double and Triple-Yolked Eggs. By Maynie 

 R. Curtis. Biol. Bull. Vol. XXVL, pp. 55-83. 



No. 57. Constants for Normal Variation in the Fat Content of Mixed 

 Milk. By Raymond Pearl. Me. Agr. Exp. Sta., Ann. Rept. 

 for 1913, pp. 299-305. 



No. 58. A Pedigree System for Use in Breeding Guinea-Pigs and 

 Rabbits. By Frank M. Surface. Me. Agr. Exp. Sta., Ann. 

 Rept. for 1913, pp. 306-313, 



No. 59. On the Ability of Chickens to Digest Small Pieces of Alumi- 

 num. By Maynie R. Curtis. Me. Agr. Exp. Sta., Ann. 

 Rept. for 1913, pp. 314-318. 

 Papers published but not in the numbered series. 



a. Methods of Poultry Management at the Maine Agricultural Experi- 



ment Station. By Raymond Pearl. Me. Agr. Exp. Sta., Circ. 

 471, pp. 1-78. 



b. The Need for Endowed Agricultural Research. By Raymond Pearl. 



Science, N. S., Vol. 37, N'o. 558, pp. 707-709. 



c. Note on the Sex Behavior of the Poitou Jacks. By Raymond 



Pearl. Jour. Animal Behavior, Vol III., No. 4, pp. 297-299. 



d. Poultry N^otes, 1911-1913. By Raymond Pearl. Me. Agr. Exp. Sta., 



Bui. 216, pp. 141-168. 



e. The Result of Selecting Fluctuating Variation. By Frank M. Sur- 



face. Compte-Rend. IVe Conference Internationale de 

 Genetique, pp. 221-236. 



f. The Fourth International Genetics Conference. By Frank M. Sur- 



face. Amer. Nat., Vol. 47, pp. 646-640. 



ENTOMOLOGICAL PAPERS FROM THE MAINE AGRICUL- 

 TURAL EXPERIMENT STATION, 1913. 



Ent. 60. A Note on Two Elm Leaf Aphids. By Edith M. Patch. 



Journal of Economic Entomology, Vol. 6, No. 3, 1913. 

 Ent. 61. Insect Notes for 1912. By O. A. Johannsen. Bui, 207 Me. 



Agr. Exp. Sta. Issued March 14, 1913- 



