28 Lawson . — Gametophytes of Sequoia sempervirens. 
Fig. 31. Another stage in the fusion of the male and female nuclei. The rear portion of the 
male nucleus has a long-drawn-out appearance, due to its passage through the narrow canal between 
the neck-cells. June 27, 1902. x 750. 
Fig. 32. The first cleavage-spindle with the large V-shaped chromosomes at the equator. 
June 25, 1902. x 750. 
Fig. 33. A later stage of the first cleavage-spindle with the daughter-nuclei organized at the 
poles, and the cell-plate developing from the continuous fibrils. June 25, 1902. x 750. 
Fig. 34. Each daughter-nucleus of the first cleavage has divided, so that the pro-embryo now 
consists of four cells placed one behind the other, and each surrounded by a distinct cell- wall. June 
25, 1902. x 750. 
Fig. 35. A later stage of the embryo, showing five distinct cells. June 25, 1902. x 750. 
Fig. 36. An early stage in the development of the suspensor with the first cell of the embryo 
proper at its apex. June 25, 1902. x 750. 
Fig. 3 7. A later stage of the suspensor, showing its single large nucleus and two cells of the 
embryo proper as it is carried forward down through the endosperm. July 8, 1902. x 750. 
