384 A CENTURY OF PROGRESS /N WE NATURAL SCIENCES 



Halket, a. C. 



1930. The rootlets of "Amyelon radicans" Will., their anatomy, their apices, and their 

 endophytic fungus. Ann. Bot., 44:865-905. 



1932. A note on the origin of lateral roots and the structure of the root-apex of 



Lyginopteris oldhamia. New Phytol., 31:279-283. 



Halle, T. G. 



1929. Some seed-bearing pteridosperms from the Permian of China. Handl. K. Sv. 

 Vet.-Akad., ser. 3, 6(8): 1-24. 



1933. The structure of certain fossil spore-bearing organs believed to belong to 



pteridosperms. Handl. K. Sv. Vet.-Akad., ser. 3, 12(6): 1-103. 



1937. The position and arrangement of the spore-producing members of the Palaeo- 

 zoic pteridosperms. Compt. Rend. 2eme Congr. Stratigr. Carbon. (Heerlen, 

 1935), pp. 227-235. 



1938-1940. De utdoda vaxterna. I-H. In Vaxternas liv, C. Skottsberg, ed., 4:449-667; 

 5:1-136. Stockholm: Nordisk Familjeboks Folagsaktiebolag. 



Hanstein, J. 



1868. Die Scheitelzellgruppe im Vegetationspunkt der Phanerogamen. Festschrift, 

 Niederrhein. Ges. Natur- u. Heilkunde zum 50 jahrigen Jubilaum Univ. Bonn, 

 pp. 1-26. Bonn. 



Harris, T. M. 



1932-1937. The fossil flora of Scoresby Sound, East Greenland. 2-5. Meddelel. om 



Gronland, 85(3):1-114; 85(5):1-133; 112(1) :1-176; 112(2) :1-114. 

 1933. A new member of the Caytoniales. New Phytol., 32:97-114. 

 1940a. On Caytonia Thomas. Ann. Bot., n.s., 4:713-734. 



1940b. On some Jurassic specimens of Sagenopteris. Ann. and Mag. Nat. Hist., ser. 11, 

 6:249-265. 



1941a. Cones of extinct Cycadales from the Jurassic rocks of Yorkshire. Philos. Trans. 

 Roy. Soc. London, B 231:75-98. 



194:lh. Caytonanthus, the microsporophyll of Caytonia. Ann. Bot., n.s., 5:47-58. 



1942-1952. Notes on the Jurassic flora of Yorkshire, 1-12, 14-17, 20-25, 27-31, 33, 36, 

 38-47, 49-57. Ann. and Mag. Nat. Hist, Ser. 11—9:568-587; 10:506-522, 

 837-854; 11:419-433, 674-690; 12:213-222, 366-378, 475-488, 820-82,5 829- 

 835; 13:1-24, 392-400, 407-411, 659-662. Ser. 12—1:192-213; 2:275-299, 561- 

 585; 3:1001-1020; 4:915-937; 5:362-382, 614-627. 



1943. The fossil conifer Elatides Williamsoni. Ann. Bot., n.s., 7:325-339. 



1944. A revision of Williamsoniella. Philos. Trans. Roy. Soc. London, B 231:313-328. 



1947. The problems of Jurassic palaeobotany. Bol. Soc. Geol. Portugal, 6(3) :l-32. 



1951a. The relationships of the Caytoniales. Phytomorphology, 1:29-39. 



1951b. The fructification of Czekanowskia and its allies. Philos. Trans. Roy. Soc. Lon- 

 don, B 235:483-508. 



Herzfeld, S. 



1914. Die weibliche Koniferenbliite. Oesterr. Bot. Zeitschr., 64:321-358. 



HlITOlN'EN, I. 



1950. Ein neuer Fall von Zapfensucht bei der Kiefer, Pinus silvestris L., und wie ein 

 solcher zu erklaren ist. Mem. Soc. Fauna et Flora Fenn., 25:115-120. 



Hill, T. G., and E. de Fraine 



1913. A consideration of the facts relating to the structure of seedlings. Ann. Bot., 

 27:257-272. 



HiRASE, S. 



1895, 1898. etudes sur. la fecondation et I'embryog^nie du Ginkgo Mloha. I, II. Journ. 

 Coll. Sci. Imp. Univ. Tokyo, 8:307-322; 12:103-149. 



