Preface
In these days of limited leisure, and continually increasing literary activity, when there is more and more that every intelligent man would wish to read, and apparently less and less time for reading, an apology is required for the publication of a book, however small, which does not profess to contain anything absolutely new. At the same time, the very circumstances above referred to, render it desirablo that the observations of specialists should be condensed and epitomised for the general reader, and hence the continually increasing demand for lectures ; which need not, because they are popular, be the less truly scientific.
The fact that this little book does not contain anything new to those who have specially studied the parts of science with which it deals, precludes it from constituting any tax on the time of those who have devoted themselves to these subjects.
vi PREFACE.
Oil the other hand, I hope it may be found to present the fiicts in a condensed, and yet interesting form. The demand I have had for separate copies of my lectures may moreover excuse, if not justify, their republication.
High Elms, Down, Kent. 18th March, 1879.
Lecture I
Contents
ON FLO WEES AND INSECTS.
PAGE 1
ON PLANTS AND INSECTS.
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