Publisher's Synopsis
Excerpt from Handbook of Invertebrate Zoology: For Laboratories and Seaside Work
I have, therefore, attempted to show the student how to acquire a knowledge of the facts for himself, in order to remove this burden from lecturers and text-books.
The types selected for description are necessarily few but I hope that a thorough study of all the forms which are here described will fit the student for more exten sive research.
In the treatment of each type I have not attempted to make an exhaustive monograph for the use of special ists, or to present all that is known about it; but sim ply to call the attention of the beginner to the strue tural features which he can readily observe for himself.
There are many facts of the greatest importance, which the beginner must accept on authority, and as reference to facts of this sort, in an elementary description, for use in the laboratory, could hardly fail to create confusion, such references have been omitted.
The concrete description of specific forms demands figures of the species described, and as it is important that these figures should show nothing that the beginner cannot himself discover in his specimen, the complicated figures which accompany most monographs were found to be impracticable, and most of the cuts have been made for the purpose, by photographic reproduction of the author's drawings, or of drawings made from nature under his direction.
Where it has been thought best to reproduce a figure from a monograph, the author has drawn it with a pen, and this drawing has been photo-electrotyped.
It is hoped that the practicability and significance of the cuts, as guides to dissection and study, will more than compensate for the artistic finish and technical skill which has been lost by the employment of this method of reproduction.
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