l62 MAINE AGRICULTURAL EXPERIMENT STATION. I909. 



Kirchstein, A., und Sweers, P. 1909. 



Zweite Bericht iiber die verglcichcnden Kiickcnaufzuchts- 



Versuche. 



Deutsche landw. Gefl. Ztg. Vol. 12, No. 43, p. 750. 



Data regarding fertility and hatching of eggs of different 



breeds under the same conditions of management. 

 Kirchstein, A., Sweers, P., Brinkmann, E. 1909. 



Dritte Bericht liber die vergleichenden Kiickenaufzuchts- 



Versuche. 



Deutsche landw. Gefl. Ztg. Vol. 12, 44, p. 763. 

 Continuation of preceding report. 

 Lau, H. 1894. 



Die parthenogenetische Furchung des Hiihnereies. 



Inaug. Dissert. Jurjew-Dorpat. p. 50. 



Data on persistence of fertility after removal of male, 



and on vitality of spermatozoa. 

 Lecaillon, A. 1908. 



Sur les modifications qui peuvent se produire dans la 



structure de la cicatricule de I'oeuf non feconde des oiseaux. 



Compt. rend. Soc. Biol. Vol. 64, No. 14, pp. 647-649. 



Sur les changements c[ui se produisent, apres la ponte, dans 



I'aspect exterieur de la cicatricule, de I'oeuf non feconde 



de la poule. 



Compt. rend. Soc. Biol. Vol. 64, No. 21, pp. 1034-1036. 

 Lillie, F. R. 1908. 



The Development of the Chick. 



New York (Holt) pp. xi. and 472. 



Contains general account of the process of fertilization 



of the bird's egg, with reference to the existing biological 



literature on the subject. 

 Mairs, T. I. 1908. 



Some Poultry Experiments. 



Penn. Agr. Expt. Stat. Bulletin No. 87, pp. 1-48. 



Gives statistics of fertility, hatching and weight of eggs 



for different breeds and months of the season. 

 Meyer. 1909. 



Verpackung der Bruteier in Kartons oder Korben. 



Deutsche landw. Gefl. Ztg. Vol. 12, No. 44, p. 764. 



Data on hatching of eggs kept in different ways pending 



incubation. 



