N"o. 643] 



ORTHOGENESIS 



143 



1911.353 "Mutations" of Waagcn and "Mutations" of De Vrles or 

 [and] "Rectigradations" of Osborn. Science, N.S., Vol. 

 XXXIII, No. 844, p. 328. 



1912.362 Darwin's Theory of Evolution by the Selection of Minor Salta- 

 tions. Amer. Naturalist, V..1. XLVI, No. .141'. y]K 7r,-S2. 



1912.372 The Continuous Origin of Certain Unit Characters as Observed 

 by a Palaeontologist. Hant i/ S<,c. ]'nlii)ur. 7th sor., Nov., pp. 

 153-204. 



1914.412 [Abstr.] Rectigradations and Allometrons in Relation to the 

 Conception of the "Mutations of Waagen," of Species, 

 Genera, and Phyla. Bull. Gcol. Soc. of Amer., Vol. 2.1, Xo. 



1915.416 Oiigin^f Single Characters as Observed in Fossil and Living 

 Animals and Plants. Amer. NatnraUst, Vol. XLIX, Xo. 580, 

 pp. 193-239. 



1915.421 The Origin of New Adaptive Characters. Nature, Vol. 96, Xo. 



