582 Jacob's West Devon and Cornwall Flora, 



number to each species is affixed at a little distance from the 

 names of that species, so that it can " be conveniently cut off," 

 if the author's " arrangement is disapproved of." The author 

 has stated other objects of his, as follows : — " As so much 

 difference exists as to the proper location of various genera, 

 I have thought it better not to give any other divisions than 

 those of genera and species, so that each collector, by merely 

 changing the relative situation of the cases, may place a bird 

 in any family or sub-family, or other division, as to [on] its 

 adaptation to which he may have changed his opinion. The 

 grand object of having njixed nomenclature will, I hope, be 

 answered, and a world of trouble saved, in not having to print 

 and reprint names over and over again, and ' saepe stylum 

 vertere.' " 



Jacob, Rev. </., LL.D. : West Devon and Cornwall Flora. 

 In monthly Numbers, Is, each. The publication of these 

 was begun some time in 1835. 



Each number " will contain a description of at least twelve 

 plants. A plate of the rarer plants will occasionally be given. 

 ... In the first instance, the phanerogamous plants only will be 

 treated of; but the riches of the cryptogamic class, more par- 

 ticularly of the Algae, will shortly be brought forward." — 

 Numbers 1st, 2d, 3d, and 4th have been looked into ; and in 

 these are proofs of the author's ability to produce a flora in 

 which botanical accuracy, a clear exposition of the matters to 

 be communicated, and some useful fruits of his own investi- 

 gation shall be present together. In the four numbers seen, 

 the genera treated on are taken isolatedly, and the pages are 

 not numbered. Directions for arranging are to be supplied 

 with the 12th number. It is clear that the arrangement is to 

 be according to the sexual system of Linnaeus. In the 2d 

 number is supplied a coloured figure of £cilla veYna, and of 

 parts of it; in the 4th number, a coloured figure of Zotus 

 angustissimus, and of parts of it. 



Francis, G. : A Catalogue of the Species of British Flower- 

 ing Plants and Ferns that are described in the third edition 

 of Dr. Hooker's British Flora ; published to facilitate Bo- 

 tanical correspondence, as an Index to Herbariums, &c. 

 In one sheet, price 6d. ; 5s. a dozen. 



A means of very great convenience to those to whom the 

 writing of lists of some length may be an inconvenience. Mr. 

 Francis's catalogue is disposed upon one page of a single 

 sheet ; the names are arranged in columns ; and there is a 



