LINNEAN SOCIETY OF LONDON. 11 



strand appears to be responsible for tbe building up of a definite 

 portion of the tuber. 



Prof. A. C. Seward, Mr. ^X. C. Worsdell, and Dr. A. B. Eendle 

 contributed further remarks, the author replying. 



Dr. Marie C. Stopes, i.L.S., gave an exposition of "New type 

 of Stem-anatomy in Ci/cadeoidea, with a well -petrified new species." 

 The exhibitor gave a short account of two species of Cycadeoidea in 

 which the internal anatomy is partially preserved, and also of a 

 well -petrified new species showing very curiously alternating series 

 of wood zones. The specimens are interesting, not onlv as new 

 petrifactions, but for their bearing on the essential differences 

 between Cycadeoidea and Bermettites. 



Dr. D. H. Scott and Prof. A. C. Seward commented on the 

 interest of this exhibition, and the author replied. 



Prof. E. A. MiNCHix gave the salient points of a paper bv 

 Mr. Waltee E. Collixge, M.Sc, F.L.S., descriptive of a new 

 genus and species of terrestrial Isopoda from British Guiana, 

 forwarded to the author by Mr. Gr. E. Bodkin, (lovernment 

 Economic Biologist at Georgetown, Demerara. 



Dr. Staff exhibited inflorescences of the Carob tree (Ceralonia 

 Siliqua) representing the several sexual conditions in which the 

 tree occurs. He also gave au account of Cavanilles's observations 

 in the Carob groves of A'alencia and the work done by Heckel and 

 Schlagdeuhauffen on the French Eiviera, and by Gennadius in 

 Cyprus. According to these authors most of the apparently 

 female trees, that is trees with very small subsessile anthers, 

 are in reality hermaphrodite (bracliystemonous hermaphrodites 

 in contradistinction to the rare dolichostemonous hermaphro- 

 dites). But Dr. Stapf pointed out that no anthers containing 

 pollen could be found in the " brachystemonous " specimens in 

 the Kew Herbarium, in spirit material recently received from the 

 Italian Biviera, and in preparations of such flowers obtained from 

 Cyprus. In spite of Heckel's, Schlagdenhauffen's, and Genna- 

 dius's excellent work, there is still some mystery surrounding the 

 polhnation of the Carob tree v.hich is certainly worth studying 

 on the spot. 



Mr. W. C. AVorsdell, Dr. A. B. Eendle, and Mr. A. W. Hill 

 discussed certain of the problems raised. 



March 18th, 1915. 



Prof, E. B. PouLTON, r.E.S., President, in tlie Chair. 



The Minutes of the General Meeting of the 4th March, 1915, 

 were read and confirmed. 



