40 FREY, ON THE MICROSCOPE. 
illustrated by woodcuts; but we cannot avoid remarking 
that it affords the most glaring instance with which we are 
acquainted of an unscrupulous method of swelling the bulk 
of a book, and of adding to its apparent richness of illustra- 
tion, too often adopted by our German brethren in science. 
We allude to the incessant and perfectly needless repetition 
of the same woodcut in different places ; for instance, there is 
a large cut occupying more than half a page, representing 
rately a section of the compound microscope, which occurs 
three times on nearly as many pages, viz., pp. 18, 22, 24; 
whilst another cut, representing in two places (pp. 2] and 48) 
the mode of arrangement of the lenses in a compound, cor- 
recting objective, does duty at p. 59 for Hartnack’s immersion- 
lens! A large fioure of Hartnack’s instrument recurs three 
times, occupying at least a quarter of a page each time; one 
of M. Nachet’s twice, &c., &c. In the histological part also 
the same figures, and some at any rate not “original ones, 
recur over and over again. A section of the gastric mucous 
membrane is given in pp. 265 and 3806; one of a Peyer’s 
gland, in pp. 261 and 312, &c., &e. ; whilst actually on oppo- 
site pages (190 and 191) is the same little woodcut of organic 
particles in urine, both in sight at the same time. This is 
book-making with a vengeance. 
ee —— EEE 
