192 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
" Name this Flower." By G. Bonnier. Translated by G. S. 
Boulger. 8vo. xii + 331 pp. (Dent, London, 1917.) 6s. net. 
This simple handbook will be welcomed by many who desire an 
easy way to knowing the name of the common wayside flowers, for it 
is easy to use, and reliable. We have tested it for a number of 
flowers of different groups and found it always to lead to the name 
with a minimum of trouble and (if the simple directions are followed) 
with certainty. The learned author has, of course, dealt with the 
common plants of France, but the translator has added a few, so 
that the common plants of Great Britain are all here. Does one find 
a plant with a white flower and a rosette of red, stalked, round, hairy, 
sticky leaves ? Turn to page 2 and we are asked (1) to decide whether 
it is a plant which bears flowers or not and directed to (2). Is it 
herbaceous or not ? Are the flowers arranged in close heads or not ? 
Are the flowers red, white, etc.? (to No. 506). Are they arranged 
in an umbel (illustrated) or not ? (507). Is the flower regular or not ? 
(508). The shape of the leaves ? Their arrangement ? and so on, 
until at last we are led inevitably to the Common Sundew, which is 
briefly described and neatly figured. Coloured figures are given of 
several plants and an annotated Index of English plants with their 
uses, etc., which add very much to the value and interest of the book. 
" Manual of Fruit Diseases." By L. R. Hesler and H. H. Whetzel. 
xx + 462 pp. 8vo. (Macmillan, New York, 1917.) 8s. 6d. net. 
The authors candidly state what every plant pathologist feels, that 
" the best possible book on fruit diseases cannot entirely meet the 
situation," that is, the needs of " every fruit-grower regarding his 
many problems." Nothing can take the place of personal inspection 
and the specific advice of a competent pathologist furnished with full 
information upon all the facts of the case. A good book used with 
discretion is the next best thing, and this the authors have produced 
for the American public. That all the facts, or their relative import- 
ance, will be the same on this side of the Atlantic as on that is unlikely, 
but that they will be suggestive to the fruit-grower is certain. The 
fruits dealt with are apple, apricot, blackberry, cherry, cranberry, 
currant, gooseberry, grape, peach, pear, plum, quince, raspberry, and 
strawberry. The account of the several diseases of each of these 
fruits is followed by a chapter on fungicides, and an appendix on books 
and meanings of terms. Perhaps the most troublesome disease of the 
apple in England is that known as scab, caused by the fungus Fusi- 
cladium dendriticum, and to be controlled here by the careful pruning 
out of dead and dying spurs and branches, and by two sprayings with 
Bordeaux mixture (or in the case of tender-leaved apples, such as 
Cox's Orange, with lime-sulphur), one before the buds burst, the other 
just after the petals fall. The form on the apple twigs appears to be 
rare in America, and the recommendations as to pruning are thus 
omitted from the account given by the authors, dependence being 
