REVIEWS AND EXCHANGES 247 
whilst that of “A Sitting Nightjar” is a bewildering puzzle of proteclive 
resemblance. One can only ask “ Where is the Nightjar ?” 
Nature's Riddles , or the Battle of the Beasts. By H. W. Shepheard-Walwyn. 
With a coloured plate and over loo illustrations by the Author. Cassell and 
Co. Price 6s. 
We hardly think Mr. Shepheard-Walwyn, whose name is new to us, has been 
successful in his choice of titles for this attractive volume. The riddles which he 
attempts to solve are almost all of them those of the protective colouring, forms 
and postures of animals, and he deals not only with beasts but also with reptiles, 
birds and insects. There is no more fascinating, no more inexhaustible a topic in 
the whole modern study of Nature, and the author tells his story simply and 
accurately in “a tongue understanded of the people” and likely to interest any 
ORANGE-TIP BUTTERFLY RESTING ON HEMLOCK FLOWERS. 
(From “ Nature’s Riddles,” by permission of Messrs. Cassell and Co.) 
reader, while his excellent original illustrations admirably enforce his argument. 
One of these we are able, by the courtesy of the publishers, to reproduce here. 
The coloured frontispiece of the Leaf-insect is an excellent specimen of colour- 
printing. We would specially direct the attention of young entomologists to 
Mr. Shepheard-Walwyn’s cautions against handling hairy caterpillars, or coming 
within reach of the formic acid ejected by that of the Puss moth. 
Nature, Curious and Beautiful. By' Richard Kerr. With 69 Illustrations from 
drawings by the Author. Religious Tract Society. Price 3s. 6d. 
At an earlier stage of mental development a child may prefer the want of 
system of the old raree-show type of museum to a volume as systematic as that of 
which we have just been writing. Such a collection of curiosities Mr. Kerr gives 
us in this little book. Ranging from the monkey’s dinner-bell (Hura crepitans ) 
