Excerpt from Textbook of Elementary Biology, Vol. 1
In order to obtain clear ideas of Biology, it is absolutely necessary that reading should be accompanied by the dissection and examination of specimens. The student cannot be too strongly urged to devote as much time as possible to practical work.
I have made frequent reference to the following books: Thompson's Outlines of Zoology, Marshall and Hurst's Practical Zoology, Claus and Sedgwick's Text-book of Zoology, Leuckart's Human Parasites, Prantl and Vines' Text-book of Botany, and Parker's Elementary Biology, In addition to these I have referred to numerous papers by Professor Ray Lankester, Mr. W. E. Hoyle, Mr. F. E. Beddard, and many others. To all these authors I take this opportunity of expressing my grateful acknowledgments. The sources from which the diagrams have been taken are in all cases mentioned. I wish especially to thank Messrs. Smith, Elder, & Co., and Mr. Pentland, for their kind permission to insert diagrams from books published by them. I have further to thank Mr. F. E. Beddard for numerous suggestions, and also for references to original papers, and Dr. Washbourne for his friendly criticism of the chapter on Bacteria.
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