260 THE JOURNAL OF BOTANY 



do not think P. lanceolata enters into it. My plant agrees admir- 

 ably with the description of P. media var. Monnieri Eouy in the 

 Flore de France, x. p. 133, " Feuilles sublanceolees, long 4 petiolees; 

 epi cylindrace," but, in the absence of examples of this variety in 

 the National Herbarium, I am unable to say whether my plant is 

 identical with it. — C. E. Britton. 



Viola calcarea Gregory. — Mr. Arthur Bennett (p. 22) says 

 V. parvula Opiz (reduced to a variety of hirta by Kosteletzky) is 

 no doubt the above plant. May I ask if he has seen authentic 

 specimens? With plants so highly critical as the violets it is 

 somewhat dangerous to decide by descriptions alone. We have 

 seen that Babington's variety calcarea included also V. Foudrasi. 

 — G. Claridge Druce. 



REVIEWS. 

 Some Books on Gardening. 



Several books on gardening have lately reached us, concern- 

 ing which a few words are due. One of the cheapest and most 

 comprehensive volumes we have seen is that by Mr. John 

 Weathers, entitled Twentieth Century Gardening (Simpkin, Is.). 

 This is an attractively bound and well printed volume of more 

 than 300 pages w T ith nearly a hundred cuts, and contains practical 

 instructions for every kind of flower-garden, with full lists and 

 brief descriptions of the plants most suitable for each ; fruit-trees 

 and the vegetable garden are fully dealt with, and there is an 

 excellent calendar of garden work for each month as w T ell as a 

 capital — and w r e are glad to note, only one — index. Mr. Weathers's 

 name is guarantee for the quality of the letterpress; the book 

 should be a boon to all garden lovers, especially to those who 

 have little to spend on books. The same publishers have also 

 reissued at a cheap rate (Is. 6d. each) Mr. Weathers's attractive 

 books dealing respectively with Garden Flowers, Bulbous Plants, 

 Flowering Trees and Shrubs, and Roses. Each volume contains 

 33 well executed coloured plates — many containing more than one 

 species — and 150 pages of suitable letterpress. 



Garden Work, by Mr. William Good (Blackie, 5s. net.) is a 

 handsome small quarto volume which gives, as its title implies, 

 a complete summary of the subject in so far as that relates to 

 actual work in the garden. It is intended, the author tells us, 

 not only for those who take up gardening for pleasure, but also 

 for those who are making a special study of it, or who may be 

 preparing for examinations ; for this latter purpose it will be 

 found very serviceable— the chapter on "The Plant," for example, 

 gives a good summary of plant physiology. There are good 

 coloured plates and other illustrations. 



Messrs. Crosby, Lockwood & Son send us a volume on the 

 Propagation and Pruning of Hardy Trees, Shrubs, &c. (6s. net.), 

 which is mainly of a practical nature. The numerous (56) figures 



