170 THE JOURNAL OP BOTANY 



reachocl the mai'vellous total of 1012 species [of British Flowering 

 Plants presumably] as against 800 last year. This collection 

 must surely be a record for any schoolboy, and we must again 

 congratulate Graveson on his energetic and enthusiastic work." 

 Thus Bootham School, whose Natural History Society is the 

 oldest of any such school society in England, creates another 

 record, and at the same time it is pleasant to realize that mere 

 collecting is by no means the only thing encouraged at that 

 school, which has produced, to mention a few of its botanists 

 only, J. G. Baker, E. G. Baker, F. W. Oliver, A. H. Burtt, Miller 

 Christy, H. Corder, H. Tuke Mennell, and the late James Back- 

 house and Silvanus Thompson. Some otlier branches of Natural 

 Science and Literature are equally well represented by distin- 

 guished names among the alumni of this well-known Friends' 

 School. — H. S. Thompson. 



Pyrus cordata Desv. in Monmouthshire (v.-c. 35). — Just 

 within the county, close to the Wye, on a high rough bank, in the 

 parish of Dixton, I found two plants of this species in 1910. It 

 grows within a few miles in Gloucestershire, at Symonds Yat, and 

 in Herefordshire, on the Doward. When I pointed out the trees 

 to Mr. Ley, he agreed to the identification. — H. J. Eiddelsdell. 



REVIEWS. 



A Monograph of the British Lichens, being a Descriptive Catalogue 

 of the Species in the Department of Botany, British Museum. 

 Part II. By Annie Lorrain Smith, F.L.S. 8vo, cL, pp. 409 ; 

 59 plates. Price £1 Is. 

 Many years have elapsed since the publication (in 1894) of the 

 first volume of a Descriptive Catalogue of the British Lichens in 

 the National Herbarium, compiled by the late Eev. J. M. Crombie. 

 At the death of the author 66 genera of British Lichens out of a 

 total of 93, according to the arrangement given in the Conspectus 

 Generum of vol. i., had thus been published, including descrip- 

 tions of 580 species, with numerous subspecies,' varieties, and 

 forms. Lichenologists have been expecting eagerly, and now 

 welcome joyfully, the appearance of vol. ii. of the Catalogue, in 

 which Miss Lorrain Smith carries to completion the work pro- 

 jected by Crombie. 



It would seem by reference to the Conspectus in vol. i. that 

 the greater part of the work had already been accomplished in 

 that volume, which leaves only 26 genera to be dealt with, accord- 

 ing to the original arrangement. It happens, however, that these 

 remaining genera include the largest, and some of the most per- 

 plexing, groups of lichens, and therefore it is perhaps fair to say 

 that the bulk of the work has fallen to Miss Smith. The 26 

 genei^a of Crombie have increased by additions and subdivisions to 

 55, including the large number of 858 species, as against 580 of 

 the previous volume. The additions are due partly to the in- 



