and Laboratory Methods. 



2303 



number of forms is the lack of patience in the untrained pupil for long continu- 

 ing detailed study. They want a change. It may be possible to repress this 

 habit of childhood, but I do not think it is desirable to do so. We do not expect 

 the pupils to become investigators. Our purpose is to enable them to become 

 acquainted with the appearance of several of the important types of animal life ; 

 to examine the demonstration dissections of all the laboratory types ; to under- 

 stand that in the several organs, physiological processes are carried on ; to see 

 by experiments and explanations what a physiological process is, and the part 



Fig. 1. 



each one plays in the sum process of living. Whenever the opportunity offers, 

 and that is very frequently, the pupil gathers into his increasing store of knowl- 

 edge examples of adaptation. This is always an interesting field, because it 

 explains things easily to him. 



In beginning the study of a group, as the insects, or Crustacea, we have a 

 customary method of procedure, based on the belief that the pupil should obtain 

 first of all some knowledge of the morphology of the organism. Whether this 

 knowledge is superficial or thorough, it is something his mind holds and adds to 

 in a way that it can not do if the animal is described for him in a book first, or 



