"My Life," i. 359.
"My Life," i. 361-3.
It will be remembered, that Darwin died in April, 1882, twenty-six years previously.
"Life and Letters of Charles Darwin," ii. 188.
"The Herbert Spencer Lecture," delivered at the Museum, December 8, 1910. (Clarendon Press, Oxford.)
"My Life," ii. 23-4.
"On the Law which has regulated the Introduction of New Species."—Ann. and Mag. of Nat. Hist., 1855. The law is thus stated by Wallace: "Every species has come into existence coincident both in time and space with a pre-existing closely-allied species."
"The Origin of Species."
"The Origin of Species."
First Edit., 1859, pp. 1, 2.