Duplication of generative nuclei by means of physiological stimuli and its significance W. E. De Mol OriginalPaper Pages: 225 - 272
A cytological investigation of some species and species-hybrids of the genus Saccharum G. Bremer OriginalPaper Pages: 273 - 326
A preliminary statement of the results ofMr. Houwink's experiments concerning the origin of some domestic animals J. P. LotsyK. Kuiper OriginalPaper Pages: 357 - 375