87 



Scott 



The Structure of the Palaeo- 



zoic Seeds, Trigonocarpus Parkinsoni, Brongniart, and 

 Trigonocarpus Oli»eri, sp. nov. Part I. (Ann. Bot., 

 Vol. XXL, pp. <S9-13L tt, 11-14.) 



Worsdell, W. C.-The Origin of the " Flower." Science Pro- 

 gress in the Twentieth Century, Vol. II., pp. 255-262. 



Dr. J. Berghs, of the Institut Carnoy, Lou vain, studied the 

 cytology of certain fresh-waler algae, and especially the cell- 

 division of the Conjugatae. 



Mr. L. A. Boodle completed an investigation on the germina- 

 tion of the spores of filmy species of Todm under different 

 conditions, the chief point being the comparison of prothalli, 

 produced by germination in closed sporangia, with prothalli 

 grown from free spores. Mr. Boodle continued a study of some 

 anatomical points in the ovule of Cycas, and made cultural 

 experiments with a species of Bromus and other plants, and 

 Investigated the nature of a substance called M N'hangtjllitt." 

 This is a curious product resembling bitumeu and apparently 

 derived chiefly from a gelatinous Alga : see above. 



Dr. F. E. Fritsch and Miss M. E. Narborough began a series of 

 experiments on the osmotic pressure of the cell-sap in Algae, and 

 other factors affecting growth, &c. 



Mr. P. Groom began a research on the occurrence of fat in 

 different Phanerogamous plants. 



Mr. W. E. Hiiey examined the vascular structure of Gleichenia 

 pectinate, wad compared it with that of other species, the chief 

 interest of the comparison being due to the fact that G. pectinata 

 has solenosfelic structure, while all the other species of the genus, 

 as far as is known, are protostelic. 



Dr. A. A. Lawson continued his series of investigations on the 

 morphology of the Gymnosperms, and made a special study of the 

 gametophytes and embryo of the Cupressineae. His conclusion, 

 derived principally from a consideration of the presence or 

 absence of certain vestigial structures, is that the Cupressineae do 

 not present as many primitive characters as the Abietineae, but 

 are more primitive than Cephalofaxus : see above. 



Mr. A. J. Maslen studied the course of the vascular bundles in 

 the ovules of several Cycads. 



Mr. W. C. Worsdell continued to collect materials for a general 

 morphological work on Vegetable Teratology ; and also carried on 

 his investigations on the anatomy of Dicotyledons, as a means of 

 elucidating their relationship to Monocotyledons, and determining 

 the nature of the primitive type of structure from which the 

 present vascular structure of both groups of plants has been 

 derived. Mr. Worsdell also made a special morphological and 

 anatomical study of Paeon ia, with a view to determining the true 

 systematic position of this genus. 



Pathology. — During the past year over six hundred reports on 

 plant diseases have been issued. A great number of specimens 

 infected, or suspected of being infected, by American gooseberrr 



