SCIENTIFIC TREATISES. 35 



SCIENTIFIC TREATISES. 



Amongst those held in most general estimation at the pre- 

 sent time are : 



5. The Student's Flora of the British Islands, by Sir J. D. 



Hooker; 3rd edition ; post 8vo. 10s. 6d. Macmillan. 



This is the latest authority on English botany : to a critical 

 description of every plant, the geographical range is also added. 

 There are no illustrations in this work, but it is by far the most 

 useful and interesting to the student. 



6. A Manual of British Botany, by Prof. C. C. Babington ; 



12mo. 10s. 6d. Van Voorst. A thin paper edition 

 for field use, 12s. 6d. 



A work of long-recognised merit. There are no illustra- 

 tions, but the descriptions are valuable, and special points are 

 emphasised to facilitate identification. 



7. A Handbook of the British Flora, by George Bentham ; 



1,295 wood-cuts; 2 vols., post 8vo. 1 Is. Reeve. 



This handbook has found many admirers. It departs, 

 however, so widely from the present accepted definition of 

 species and varieties that confusion is inevitable. 



The plates which accompany it in a second volume are 

 carefully executed, but are too minute to insure safe guidance. 



8. The Botanist's Pocket Book, by W. R. Hayward ; crown 



8vo. 4s. 6d. George Bell. 



This is only a small key of genera and species for field 

 use. The writer has used it constantly with doubtful satis- 

 faction. 



9. Soiverbijs English Botany, containing a description and 



life-size drawings of British plants, edited by Boswell 

 Syme ; 1,923 coloured plates; 12 vols., imp. 8vo. 

 <24 3s. George Bell. (The 12th volume, containing 

 Ferns and Allies, with General Index. 35s. cloth.) 



This is the standard work on British Botany. It has seen 

 many alterations and additions since it was first issued in 

 1790. An edition in 12 volumes, published in 1832 1846, 

 with descriptions by Sir James Smith, is sometimes met with ; 

 it is carefully executed, and the plates of Flowering and Crypto- 

 gamic Plants not to be surpassed ; but, as it is arranged on the 

 Linnean system, it is somewhat out of date. A good copy is 

 worth about 12. The present and third edition (18631886) 



