382 ^ CENTURY Of PROGRESS IN THE NATURAL SCIENCES 



Florin, R. (Cont.) 



1951. Evolution in cordaites and conifers. Acta Hort. Berg., 15:285-388. 

 1952a. On Metasequoia, living and fossil. Bot. Not., pp. 1-29. 



1952b. Evolution et classification des Gymnospermes. Ann. Biol., 28 :C 99-108. 



Floby, W. S. 



1936. Chromosome numbers and phylogeny in the gymnosperms. Journ. Arnold 

 Arbor., 17:83-89. 



Flous, F. 



1936a. Classification et evolution d'un groupe d'Abietinees. Trav. Labor. Forest. Tou- 

 louse, (tome 1), 2(17):l-286. 



1936b. Evolution des rameaux chez les Pinacees. Bull. Soc. Hist. Nat. Toulouse, 69: 

 95-102. 



1938a. Signification des rameaux et bourgeons de cedre. Bull. Soc. Hist. Nat. Toulouse, 

 72:99-124. 



1938b. A'propos de revolution des Abietinees. Bull. Soc. Hist. Nat. Toulouse, 72:829- 

 304. 



Foster, A. S. 



1939. Problems of structure, growth and evolution in the shoot apex of seed plants. 

 Bot. Rev., 5:454-470. 



1941. Comparative studies on the structure of the shoot apex in seed plants. Bull. 

 Torrey Bot. Club, 68:339-350. 



1949. Practical Plant Anatomy. 2nd ed., xi + 228 pp. New York: D. Van Nostrand Co. 



Fraine, E. de 



1912. On the structure and affinities of Sntcliffla, in the light of a newly discovered 

 specimen. Ann. Bot, 26:1031-1066. 



Fbentzen, K. 



1931. Studien uber die fossilen Holzer der Sammelgattung Dadoxylon Endl. I-II. 



Abh. Heidelberg. Akad. Wiss., 16:1-93; 19:1-51. 



GaI SSEN, H. 



1941-1952. Les Gymnospermes actuelles et fossiles. I-VIII. Trav. Labor. Forest. 

 Toulouse, (tome 2, sec. 1), l(l):l-72; l(2):l-40; 1(3):1-104; l(4):l-43; 

 l(5):l-26; l(6):l-24; l(7):l-54; l(8):l-248. 



1948. Interpretation de I'ecaille du cone chez les Coniferes. Compt. Rend. Acad. Sci. 

 Paris, 227:731-733. 



1952. L'evolution pseudocyclique. Ann. Biol., 28 :C 207-225. 



Geyler, T. 



1867-1868. Ueber den Gefassbiindelverlauf in den Laubblattregionen der Coniferen. 

 Jahr. Wiss. Bot, 6:55-208. 



GiBBS, R. D. 



1945. Comparative chemistry as an aid to the solution of problems in systematic 

 botany. Trans. Roy. Soc. Canada, ser. 3, 36 (sec. 5) : 71-103. 



GiLG, E., and P. N. Sciixtrhoff 



1927. Unsere Erfahrungen liber die Brauchbarkeit der Serodiagnostik fiir die bota- 

 nische Verwandtschaftsforschung. Bar. Deutch. Bot Ges., 45:315-330, 602-606. 



GOEBEL, K. 



1923. Organographie der Pflanzen. 1st ed., 3(2) :1493-1789. Jena: G. Fischer. 



1932. Organographie der Pflanzen, 2nd ed., 3(l):i-viii, 1379-1820. Jena: G. Fischer. 



