secretion proceeds, some mucus still adhering to it; both magni¬ 
fied 16 diameters. 
14. A small portion of the caudicular sheath of one cell of the anther 
just burst, shewing the two tubular caudiculae; magnified 32 dia¬ 
meters. 
15. Transverse section of an anther in the direction of a h in fig. 9; 
magnified 16 diameters. 
16. Side view of a pollen-mass adhering to the stigmatic gland, and 
emitting the fecundating fluid; magnified 16 diameters. 
1 7 Grains of pollen in the mature state; magnified 200 diameters. 
