IV. 
Advertisements. 
Oct., 1897. 
2si. 6cl. I*ost F*r*ee« 
THROUGH A POCKET LENS. 
By HENBY SCHEKBEN, 
AUTHOR OF “PONDS AND ROCK POOLS,” &c. 
PROFUSE/. Y ILf.USrR.4 TED. 
“ The object of this little book by Mr. Scherren is to show what an immense deal lies just beyond the 
perception of the naked eye, waiting to be revealed by the application of the simplest and cheapest forms of 
magnifier. He explains what a mistake it is to suppose, as so many beginners in scientific observation do, 
that a costly compound microscope, with a host of accessories, is necessary to pry into any except the most 
recondite mysteries of nature ; and he reminds the young student how much of Darwin’s most fruitful labour 
was transacted by the aid of simple lenses. He has given us a book which can be confidently recommended, 
especially for young people.” — Fall Mall Gazette, 
“ ‘ The Pocket Lens’ is in Mr. Scherren’s hands the means of awakening our interest in the wonders of 
the insect world. Amongst the creatures brought under it are beetles, cockroaches, earwigs, grasshoppers, 
spiders, and a number of typical crustaceans. The reader is told clearly how to use the lens and sever.al Mmple 
appliances, and is then taken through what may be called a course in practical elementary natural history. 
The necessary facts of structure and habit are all set forth in a mo.st interesting manner, whilst the illustrations 
in nearly every case are of such a kind as to add to the value of the book. Surely a large number of our young 
people will welcome such a pleasant guide to knowledge.” — Schoolmaster. 
** The author takes a number of common examples of .Arthropods, and shows how much can be made out 
of their structure by a hand-lens. The usual charge made against ‘Natural History’ books, that their 
scientific ideas are antiquated, cannot be made against this one, and we gladly recommend it for all boys with 
a taste for natural history unspoiled by the laboratory.” — Eiiucaiional Times, 
“ A most delightfully interesting book for the budding microscopist and the holiday rambler.” — Hobbies. 
“ Mr. Scherren is well known as a writer of attractive little books on natural history for beginners, and his 
reputation in this respect is not likely to sutler from this volume. The types for study have been advLedly 
selected, being those, like the cockroach, water-beetle, garden-spider, and pr.awn, which can be obtained in 
almost every country district, or in any of our towns or their neighbourhood, and may very' easily be kept 
alive in suitable surroundings. For one of the great merits of this little book is, that it recommends an 
observation of the habits of the species before they be submitted to the process of dissection.” — Hatural Science. 
“ An excellent little manual of instruction and direction for those who are beginning the study of nature 
through the microscope. 
“ We have perused with much pleasure the exceedingly practical volume issued by Mr. Henry Scherren 
on the use of the pocket lens. How to fix up and use this instrument as a valuable dissecting microscope i% 
practically demonstrated by the author of this exceedingly useful little treatise, in which the powers of the 
pocket lens have not been exaggerated. The woik is fully illustrated by about loo wood engravings, and 
abounds with illustrations drawn from the lower forms of animal life, in.sccts, spiders, mites, inirapodes. the 
smaller crustaceans, and the insects and their larvai. We cannot imagine a more useful preUmin.'irv training 
for a young student than working with a pocket lens through the course indicated by the author.” — Fiebi. 
“ The book is just the right sort of one to put into the hands of intelligent boys and girls. It would he 
sure to produce fruit in stimulating them to fuller and more systematic study. What a pity it is that book-> of 
this kind are not chosen oftener as prizes, instead of the trash which children are frequently allow'cd to Choo'^e 
for themselves, or which are chosen for them by persons who know nothing of the book world.”— Methotlist 
Times. 
“ Oive this book to an intelliccm boy or girl with a taste for natural history, and let it be u^ed not in -relv 
as a reading-book but as a giiicle-))0>k to nature study, and you will do more towards cultivating the spirit of 
investigation than by dozens of lectures. The common idea that very little real work can lie done without a 
compound microscope and numerous accessories ha.s tended to discourage young naturalists, but .Mr. Scherren 
describes so many interesting objects, all of which have been seen by nim witn a pocket lens, that his book 
will induce many to study nature who would otherwise acquire knowledge second-hand."— 
BY THE SAME AUTHOR. 
PONDS AND ROCK POOLS. 
With Hints on Collecting for, and the Management of, the Micro-Aquarium. 
Illustrated. 2s. 6d. Cloth. 
Published at 56, PATERNOSTER ROW. LONDON. 
John Balt, Sons Danitlsion, Printers, Great Titchfittd Street, If 
