Descendenz und Hybriden. 189 



Finds that corn {Zea Mays) yields readily to modifications 

 of stalk, ear, or grains through seed selection. The peculiar 

 characteristics of individual Variation are said to be transmitted. 



WiNTZER, A., My Experience in HybridizingCannas. p. 

 209—210. 



Waugh, f. A., Hybrid Plums. p. 211—213. 



Rane, f. W., The Miiskmelon. p. 215—219. 



White, N. B., On Grape Hybrids. p. 221-223. 1 fig. 



Card, F. W., Practical Points from the Breeding of 

 Strawberries and Bush-fruits. p. 225 — 228, 



Pammel, L. H., Hybrids and Diseases, p. 229—230. 



Mentions certain hybrids which are immune from certain 

 fungus diseases. 



BlRBRlDGE, F. W., Hybridism versus Selection. p. 231 — 

 234. 



Questions if horticultural selection does not play a larger 

 part in breeding than does hybridization. 



WiCKSON, E. J., Notes on California Plant Breeding. p. 

 235—242. 



BOOTH, M. 0., Astudyof Grape Pollen and what the 

 Results Indicate. 



Finds that the self-sterility which often exists among cultivated 

 grapes is due usually, if not always, to the lack of potency in 

 the pollen. Such pollen is sterile on any pistil, it is different 

 in shape and structure from the potent pollen. 



DE ViLMORlN, Ph., Some hybrid Nicotianas. p. 251—253. 



The hybrids are mostly infertile. The first generation hybrids 

 were in most cases more closely related to the father than the 

 mother, but in the second and third generations some showed 

 a distinct retrogression towards the mother. 



DE ViLMORlN, Ph., Ever-bearing Strawberries. p. 255. 

 Note on the improvement of the forms already produced. 



Allen, C. L., S o m e P o s s i b i 1 i t i e s. p. 257—264. 



Alwood, W. B., On artificial Pollination of Wheat. 

 p. 265—267. 



Note on methods for artificial pollination. 



H. M. Richards (New-York.) 



The Mutation Theory of Organic Evolution. (Science, N. S. Vol. 

 XXI. p. 521—543. April 1905.) 



A series of six addresses given before the American Society 

 of Naturalists at Philadelphia, December 28. 1904; abstracts 

 of which appear below. 



