First lines of natural philosophy, divested of mathematical formulæ : being a practical and lucid introduction to the study of science : designed for the use of school and academies Q Science
The mutation theory; experiments and observations on the origin of species in the vegetable kingdom Q Science
An outline of the theory of organic evolution, with a description of some of the phenomena which it explains Q Science
Darwinism to-day; a discussion of present-day scientific criticism of the Darwinian selection theories, together with a brief account of the principal other proposed auxiliary and alternative theories of species-forming Q Science
Die Entstehung der Arten auf Grund von Vererben erwobener Eigenschaften nach den Gesetzen organischen Wachsens : Ein Beitrag zur einheitlichen Auffassung der Lebewelt Q Science
