t^ov., 19i2.] The Reduction Division in Fuchsia. 13 



7. The fully fomied chromosomes are then seen to be con- 

 nected by delicate strands. About this time or a little before the 

 nuclear wall has disappeared. 



8. The chromosomes are taken on to a bipolar spindle and 

 gradually pulled into the equatorial plane. 



9. There is an irregularity in the formation of the micro- 

 spores. Frequently as high as eight are formed from one sporocyte . 



LITERATURE CITED. 



1. Allen, C. E. — Nuclear Division in the Pollen Mother-cells 



of Lilium canadense. Annals of Botany, 19: 189-258, 

 1905. 



2. Davis, B. M. — Cytological Studies in Oenothera I. Pol- 



len Development of Oenothera grandiflora. Annals of 

 Botany, Vol. XXIII, No. 96, 1909. 



3. Davis, B. M. — Cytological Studies of Oenothera II. The 



Reduction Division of Oenothera biennis. Annals of 

 Botany, Vol. XXIV, No. 96, 1910. 



4. Fulmer, E. L. — The Development of Microsporangia and 



Microspores of Hemerocallis fulva. Botanical Gazette, 

 28: 81-88, 1899. 



5. Gates, R. R.^Pollen Development, in Hybrids of Oeno- 



thera lata X O. lamarckiana, and its Relation to Mutation. 

 Botanical Gazette, 43: 81-115, 1907. . 

 0. Gates, R. R. — Hybridization and Germ cells of Oenothera 

 Mutants. Botanical Gazette, 44: 1-2, 1907. 



7. Gates, R. R. — A Study of Reduction in Oenothera rubri- 



nervis. Botanical Gazette, 46: 1-34, 1908. 



8. Gates, R. R. — -The Stature and Chromosomes of Oenothera 



gigas, DeVries. Archiv. fur Zellforschung. 3 Band, 4 

 Heft, 1909. 



9. Gates, R. R. — The Behavior of Chromosomes in Oeno- 



thera lata X O. gigas. Botanical Gazette, 48: No. 3, 1909. 



10. Geertz, J. M. — Beitrage zur Kenntnis der Cytologic und 



der partiellen Sterelitat von Oenothera Lamarckiana. 

 Recueil des Travaux Botaniques Neerlandais, Vol. V, 

 sg 3, 1908. 



11. Hyde, Edith — Reduction Division in Hyacinthus. Ohio 



Naturalist, Vol. IX, No. 8, 1909. 



12. Lawson, a. a. — The Phase of the Nucleus Known as 



Synapsis. Trans. Roy. Soc. Edinburg, Vol. XLVII, 

 Part III, No. 2, 1911. 



