568 Saxton. —Contributions to the Life-History of Ca Hi iris. 
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EXPLANATION OF FIGURES IN PLATES XLV AND XLVI. 
Illustrating Mr. Saxton’s Paper on Callitris. 
All figures were drawn with Zeiss Camera lucida, microscope and lenses. In all :— 
A — archesporium ; C — micropyle-closing cells; D = megaspore mother-cells ; G = Starch 
grains; //= integument; K = tapetum ; L — suspensor; N— nucellus ; P = prothallus ; Q = body¬ 
cell nucleus ; P = resin cavity ; S — sterile nuclei ; T — pollen-tube ; V — vascular bundle ; 
JV = wall of microsporangium; cd 1 — male nucleus ; <j> = Female nucleus. 
PLATE XLV. 
Fig. 1. Part of median longitudinal section of young male cone showing position of sporophyll 
microsporangium, resin cavity, and vascular bundle, x 135. 
Fig. 2. Microsporangium from a similar cone, x 420. 
