[34] “Fulgarites” are composed of melted quartz, and on Mount Ararat many have been found which give a character to the formation of the lesser Ararat.
[35] Dr. Carpenter.
[36] Respecting artificial colouring of flowers, see page 329.
[37] Carpenter on the Microscope.
[38] Huxley. “Classification of Animals.”
[39] That the presence of millions of such ova in the air should not be detected, will appear very natural indeed, if we reflect that the animalcules are only 1/1500 to 1/2000 part of a line in diameter, and that the ova are a thousand times smaller.
[40] Hercules conquered the “Hydra,” which is represented in mythology as capable of reproducing two heads for each one cut off by the warrior.
[41] From “La Nature.” Notice of M. Ch. Boutemps.
[42] Kampulos, a curve; metron, measure.
Leaf Shapes from the illustration on [page 672]