Biologia generalis 30 



uality of eggs of same bird shown in each physical character (yolk 

 most constant part). Individuals less variable than race. Correlation of 

 egg characters. Intra-individual variation in relation to age, season, 

 state of health, location in litter cycle, interval between layings.j — 

 Factors Influencing the Size, Shape and Physical Constitution of the 

 Egg of the Domestic Fowl. 30th ann. Rep. Maine agric. £xper. Stat. 

 Bull. No. 228 p. 105-136. 

 209616 Cool, C, and A, N. Koopmans. 575.2 



1916. Variation and Correlation of the Number of Umbel Rays of some 

 Umbelliferae. Biometrika Vol. 11 p. 38—49, 1 pi., 5 figg. 



17 Davis, Bradley Moore. 575.2 



1915. Additional Evidence of Mutation in Oenothera. Amer. Natural. 

 Vol. 49 p. 702-706. 



18 Duncan, F. N. 575.2 



1915. An Attempt to Produce Mutations through Hybridization. Amer. 

 Natural. Vol. 49 p. 575—582. [No influence.] 



19 Gates, R. Ruggles. 575.2 



1915. An Anticipatory Mutationist. Amer. Natural. Vol. 49 p. 645 — 648. 

 [Thomas Mkehan.] 



20 Gates, R. Ruggles. 575.2 



1915. On Successive Duplicate Mutations. Biol. Bull. Woods Hole Vol. 

 29 p. 204—220. [In Oenothera.] 



21 Gates, R. Ruggles. 575.2 



1915. On the Modification of Characters by Crossing. Amer. Natural. 

 Vol. 49 p. 562-569. 



22 Gates, R. Ruggles. 575.2 



1915. The Mutation Factor in Evolution with Particular Reference to 

 ffinothera. London : Macmillan & Co. XIV, 353 pp. (Review by Bradlet 

 M. DAViS, Science N. S. Vol. 42 p. 648—651. 



23 Harris, J. Artliur. 575,2 



1915. The Value of Inter-annual Correlations. Amer. Natural. Vol. 49 

 p. 707-712. 

 :209824 Isserlis, L. 575.2 



1915. On the Partial Correlation-Ratio. Part II. Numerical. Biometrika 

 Vol. 11 p. 60-66, 5 figg. 



25 Kohlisch, 575.2 



1915. Bakteriologische Befunde bei einem Fall von Meningokokken- 

 sepsis; gibt es eine Mutation bei Meningokokken? Zeitschr. Hyg. In- 

 lektionskr. Bd. 80 p. 404—430, 1 Taf., 10 figg. [Erklarung der verschie- 

 denen Symptome (Meningitis, Kniegelenkentziindung, kryptogenetisches 

 Fieber) durch ebensoviele Mutationen.] 



26 Orensteen, Myer M» 575.2 



1915. Correlation of Anthropological Measurements in Cairo-born Na- 

 tives. Biometrika Vol. 11 p. 67—81, 6 figg. 



27 Pearson, Karl. 575.2 



1915. On certain Types of Compound Frequency Distributions in which 

 the Components can be individually described by Binomial Series. Bio- 

 metrika Vol. 11 p. 139—144. 



28 Ritchie-Scott, A. 575.2 



1916. Note on the Probable Error of the Coefficient of Correlation in 

 the Variate Difference Correlation Method. Biometrika Vol. 11 p. 136 



jog 



309629 Walton,* L. B. 575.2 



1915. Variability and Amphimixis. A Comparative Study of the Varia- 

 bility in Zygospores of Spirogyra inflata (Vauch.) formed by Lateral 

 (Close breeding) and by Scalariform (Cross breeding) Conjugation, and 

 its Bearing on the Theory of Amphimixis and Correlated Problems. 

 Amer. Natural. Vol. 49 p. 649—687, 6 figg. [Close breeding yields great- 

 er variability. Amphimixis decreases variability (cumulability) although 

 amphimutability may be temporarily increased.] 



