THE AUSTRALIAN NATURALIST. 
The work of other scientists is described and discussed, 
and many workers will be grateful for the bibliography con- 
taining references to over 200 pages and treatises of the 
most varied character. From its breadth of outlook the 
book is more than a biology of the dragonfly, and*it is 
hoped that its appearance will prove a stimulus to inten- 
sive study of other families of insects. Although the 
volume is intended primarily for those who have had a 
biological training, many parts are of the greatest interest 
to any careful reader, who will take the trouble to study 
the text and the admirable drawings. <A glossary of tech- 
nical terms, with explanations and derivations, and an 
index of more than usual completeness, greatly enhance 
the value of the book. 
The last chapter is worthy of being reproduced in separ- 
ate cover, for the tips on collecting and rearing specimens 
are of the greatest value to all collectors of insects; whilst 
the section on biological methods includes concise instruc- 
tions for making microscopic sections, both by single and 
double embedding, by methods which the author has found 
most useful in his own research. Much of Mr. Tillyard’s 
work was begun in the scanty leisure afforded by a busy 
professional life; we can only hope that his magnum opus 
may inspire further systematic study of our Australian 
insect fauna before the advance of civilisation causes 
some of its most interesting individuals to be deleted. 
—F'.W.C. 
