How then, seeing the power of stability which at least some forms are found to exhibit-seeing too the enormous chances against the survival of the particular specimens that begin to vary, and the further chances of the loss of variety by Intercrossing; how can we get the millions of millions of years necessary to produce the present extreme divergence of species?
"Creation and Its Records"
B.H. Baden-Powell
This mechanism of the sage is but one of many curious and various contrivances in the Mint family, all designed for the same end, the Intercrossing of the flowers.
"My Studio Neighbors"
William Hamilton Gibson
This subject, and that of the variation of our domestic productions, together with the causes and laws of variation, inheritance, and the Intercrossing of plants, are the sole subjects which I have been able to write about in full, so as to use all the materials which I have collected.
"The Great Events by Famous Historians, Vol. 17"
Charles Francis Horne