McAllister—Cytology and Embryology. 
647 
LITERATURE CITED. 
1. Allen, C. E., The early stages of spindle formation in the 
pollen mother cells of Larix. Annals of Botany, 17: 
281-312. 1903. 
2. --- Unclear division in the pollen mother cells of 
Lilium canadense. Annals of Botany, 19:189-258. 
1905. 
3. Arnold, George. The nucleus and microchromosomes in 
the spermatogenesis of Hydrophilus piceus. Archiv 
fiir Zellforschung. 2:181-190. 1908. 
4. Beneden, E. van, et Heyt, A. Eouvelles recherches sur la 
fecondation et la division mitotique chez Y Ascaride 
megalochephale. Bull. Acad. roy. Belgique. 3rd ser. 
1887. 
5. Berghs, J. La formation des chromosomes heterotypique 
dans la sporogenese vegetale. II. Depuis la sporo- 
gonie jusqu’aux spirem definitif. La Cellule 21:383- 
394. 1904. 
6. -La formation des chromosomes heterotypique dans 
la sporogenese vegetale. IV. La microsporogenese 
de Drosera rotundifolia, ISTarthecium ossifragum et 
Hellehorus foetidus. La Cellule 22 :139-160. 1905. 
7. —— Le fuseau heterotypique de Paris quadrifolia. Lai 
Cellule 22:201-214. 1905. 
8. Blackman, V. H. On the cytological features of fertili¬ 
zation and related phenomena in Pinus sylvestris. 
Phil. Trans. Roy. Soc. 190: 395-426. 1898. 
9. ——- On the fertilization, alternation of generations and 
general cytology- of the Uredineae. Annals of Bot¬ 
any 18:323-378. 1904. 
10. Boveri, Th. Ueber Differenzierung der Zellkerne wah- 
rend der Furchung des Eies von Ascaris Meg. Anat. 
Anzgr. 1*887. 
