NOTICES OF BOOKS AND MEMOIRS. 187 



Se e qaal valore sia da attribuire nella determinations delle specie al 



nurnero delle strie nelle Diatomee. 



Under this title Count Castracane ('Atti Accad. pontif. dei 

 nuovi Lincei,' 1879) contends that the number of the stride in 

 Diatoms is a specific factor, and suggests that Photomicrography 

 should be employed in the measurements. He gives a list of 

 many species, with the numbers of their longitudinal and 

 transverse striae. 



Under the title ' Miscellanea Botanica,' M. Decaisne has com- 

 menced to reprint from the ' Flore cles Serres ' ' the matter of 

 specially botanical interest. We have often wished that the valu- 

 able botanical contributions of Mr. J. Or. Baker and others to the 

 ' Gardeners' Chronicle ' could be separated in this manner from the 

 mass of miscellaneous matter which is of no permanent interest to 

 botanists ; the ' Garden ' also has commenced to publish descrip- 

 tions of new species, which are likely to be overlooked unless some 

 means is taken to direct attention to them. M. Decaisne's first 

 instalment contains, besides other things, a description of his new 

 genus Galton'ut, of which Hyaeinthus candicam is the type; and a 

 review of the species of Bumbax and PacJUra. 



Trii 



On 



Some Trees Yielding India-rubber ': the trees described are Mamhot 

 Glaziorii, Hevea brasiliensis, and Castilh'ii elastica. 



The 'Botanische Zeitung' of April 30th contains the announce- 

 ment that Prof. L. Just (Karlsruhe) will in future share with Prof, 

 de Bary the work of editing that magazine. It is requested that 

 all printed matter, notices, and criticisms intended for the 

 ' Botanische Zeitung ' be sent to Prof. Just ; original manuscripts 

 to Prof, de Bary. 



The recently-issued part of the 'Icones Plantarum ' contains two 

 new genera— AMtrottomma, Benth. {AscUpiadm Cynmchea), from 

 Borneo, and Stellulari*, Benth. ( Scropkularnu* Gerard**), from W. 

 Tropical Africa (Welwitsch, No. 5838). 



The Keport of the Kugby School Natural History Society for 

 1879 contains a list of additions to the flora of the district, and two 

 papers by Mr. L. Cumming— the first an interesting essay ' On 

 ■Times and Modes of Flowering in Plants ;' the other on « Phyto- 

 meteorology.' 



The Report of the North Staffordshire Field Club for 1879 

 contains a list, by Mr. R. Garner, of the rarer plants found in the 

 Parish of Stoke. 



M. Treub— who has succeeded the late Dr. Scheft'er at the 



pmtenzorg Gardens 



imo'pn ,w v — :..i.ivi -» i ■> • Weten 



Verhande - 



^derKoninklijke 

 i 79 ' two important m 



. - - important papers— one on Cell-division, with four plates ; 

 me ot her on the Embryogeny of Certain Orchids, with eight plates. 



The Boston (U.S.A.) Society of Natural History is issuing a 

 cu eap and handv series of « Guides of Sciences Teaching." Botany 



