Note 223 — Chapter V · THE ACTION OF WORMS IN THE DENUDATION OF THE LAND.
Reading edition
This statement is taken from Mr. Julien, ‘Proc. American Assoc. Science,’ vol. xxviii., 1879, p. 330.
Reading edition
This statement is taken from Mr. Julien, ‘Proc. American Assoc. Science,’ vol. xxviii., 1879, p. 330.