456 A CENTURY OF PROGRESS IN THE NATURAL SCIENCES 



Campbell, D. H. 



1928. The phylogeny of the angiosperms. Bull. Torrrey Club, 55:479-497. 

 1930a. The relationships of Paulownia. Bull. Torrey Club, 57:47-50. 

 1930b. The phylogeny of monocotyledons. Ann. Bot., 44:311-331. 



Candolle, a. p. de 



1844. Theorie elementaire de la botanique; ou, Exposition des principes de la classi- 

 fication naturelle et de I'art de decrire et d'etudier les vegetaux. 3rd ed. 

 xii + 468 pp. Paris: Roret. 



Candolle, A. P. de, and K. Sprengel 



1821. Elements of the Philosophy of Plants: Containing the Principles of Scientific 

 Botany. Transl. from the German, xxxiii + 486 pp. Edinburgh: W. Blackwood. 



Canright, J. E. 



1952. The comparative morphology and relationships of the Magnoliaceae. I. Trends 



of specialization in the stamens. Amer. Journ. Bot., 39:484-497. 



Cave, Marion E. 



1941. Megasporogenesis and embryo-sac development in Calochortus. Amer. Journ. 



Bot., 28:390-394. 

 1948. Sporogenesis and embryo-sac development of HesperocalUs and Leucocrinum 

 in relation to their systematic position. Amer. Journ. Bot., 35:343-349. 



1953. Cytology and embryology in the delimitation of genera. Chron. Bot., 14:140-153. 



Chadefaud, M. 



1936. L'origine cycadeene des angiospermes et la classification generale des phanero- 



games. Bull. Soc. Bot. France, 83:586-592. 



1946. L'origine et revolution de I'ovule des phanerogames. Rev. Scient., 84:502-509. 



1947. Le pistil des Bennettitales et l'origine des angiospermes. Rev. Scient., 85:938- 



941. 



Chalk, L. 



1937. The phylogenetic value of certain anatomical features of dicotyledonous v^^oods. 



Ann. Bot., n.s., 1:410-428. 

 1944. The taxonomic value of wood anatomy. Proc. Linn. Soc, 155:214-218. 



Chamberlain, C. J. 



1920. The living cycads and the phylogeny of seed plants. Amer. Journ. Bot., 7: 

 146-153. 



Chapman, Marjorie 



1936. Carpel anatomy of the Berberidaceae. Amer. Journ. Bot., 23:340-348. 



CiiATTAWAY, Margaret 



1932. The wood of the Sterculiaceae. I. Specialization of the vertical wood paren- 

 chyma within the sub-family Sterculieae. New Phytol., 31:119-132. 



1937. The wood anatomy of the family Sterculiaceae. Philos. Trans. Roy. Soc. 



London, B 228:313-365. 



Cheadle, V. I. 



1937. Secondary growth by means of a thickening ring in certain monocotyledons. 



Bot. Gaz., 98:535-555. 



1938. A preliminary statement on the phylogenetic significance of the anomalous 



secondary thickening in the Monocotyledoneae. Amer. Journ. Bot., 25:20s. 

 (Abs.) 



1939. The occurrence of vessels in the Monocotyledoneae. Amer. Journ. Bot., 26:9s. 



(Abs.) 



