Publisher's Synopsis
Excerpt from Directions for Laboratory and Field Work in Zoology: For Use in Connection With Practical Zoology
There are two chief reasons for separating the labora tory exercises from the textbook: (1) the pupils should not be tempted to depend upon their textbook to answer the questions that are asked in the laboratory, but should make original observations and then arrive at their own conclusions; and (2) teachers do not as a rule agree as to the order of the exercises or their contents, hence it is better to have the laboratory guide separated from the textbook in such a way as to enable the user to modify the order of procedure with the least possible confusion.
The great amount of material available for laboratory study has of course necessitated a selection of subjects. The animals included have been chosen with the idea of combining interest with profit so that the pupil may be come acquainted with the common animals which he encounters more or less constantly in his daily life as well as with those that are of particular economic importance.
Zoological principles, however, have not been slighted, but have been introduced in their appropriate positions.
Many of the animals that are important economically are very difficult to obtain, and directions for the study of these have, of course, been omitted. These animals should, however, be demonstrated to the students when ever possible. A list of species suitable for laboratory study may be compiled from the textbook, and specimens may be obtained from the dealers whose names appear in the appended list.
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