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THE AMERICAN NATURALIST [Vol. XLIV 



many essayists and the book that publishes them is twice as 

 large as the American book. Of the twenty-nine speakers eight- 

 een were British and eleven foreign (two American, six Ger- 

 man, one French, one Danish and one Dutch). Also the subject 

 covered was much broader than that of species-forming, heredity 

 and adaptation. It ranges from embryology to the genesis of 

 double stars; from the structure of the cell to the bases of reli- 

 gious faith; from the movements of plants to the evolution of 

 matter. The greatest Neo-Darwinian and one of the greatest 

 Neo-Lamarckians were there ; as were the most radical mechanic- 

 alist, the most advanced monist, the most ardent Mendelian. 

 the founder of the mutations theory, one of the most influential 

 of modern philosophers, and the four distinguished sons of the 

 immortal master. It was a more representative gathering than 

 the American one if for no other reason — though there are other 

 reasons — than that twenty-nine men are likely to be more repre- 

 sentative than eleven, or that six nationalities are likely to repre- 



But the points in common to both meetings were exactly those 

 indicated by the title of this review. And these are the points 

 common to almost all present-day critical discussion of evolution 

 and its explanations. Darwin's explanations are no longer suffi- 

 cient; they never were, of course, but they seemed so. But 

 Darwin himself as man and worker, as example, as real estab- 

 lisher and greatest champion of the whole organic evolution con- 

 ception, shines ever more brilliantly in the heavens of history. 



De Vries. AWismann. Bateson. llaeckcl. Lloyd Morgan, Goebel, 

 Klebs, Sedgwick, W. B. and D. H. Scott, Loeb, Schwalbe, Arthur 

 Thomson. Strassbnrger. Joseph Hooker, Thiselton-Dyer, Gadow, 

 Francis and George Darwin, Poulton, and the nine others that 

 represented geology, physics, philology, history, sociology, phi- 

 losophy and religion, make up an imposing list of names in 

 modern biological science. It is the list of the essayists at the 

 Cambridge meeting. Add to it the names, already catalogued, 

 of the participants in the American meeting, and the possessor 

 of the two books that contain these many addresses and essays 

 may confidently assume himself to be in possession of the latest 



V. L. K. 



