It had devoted much to embryology.
它对胚献很大。
These two principles, namely, that slight variations generally appear at a not very early period of life, and are inherited at a corresponding not early period, explain, as I believe, all the above specified leading facts in embryology.
这两个原则, 即微小变异通常出现在生命
早
时期,并在相应
早
时期遗传, 我认为解释了胚
中所有上述具体
主要事实。