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with glass in front and also back where it is desirable, as in case of Diurnals, to © 
study both under and upper sides of the wings. This collection should show at 
least types of each group in all stages, from egg to imago, as well as nests, co- 
coons, etc. This is an object lesson ever before the student, is ever ready for use — 
by the teacher to illustrate his lecture, and is at the disposal of the students in 
naming their own collections or in closer study of any group. It seems to me 
such a collection should be in every college. Lastly, I would have a laboratory 
collection which should be a biological collection, and the fuller the better. This. 
is in large, tight, glass-faced drawers. I use the Harvard case. This is for the 
use of teachers and post-graduates who desire to study further in the science. It 
is too valuable for general use by the student or to be kept to satisfy general 
curiosity. 
As I have before remarked, before the student commences the study of 
insects he should have had a good course in free-hand drawing, should have 
had instruction in the use of the microscope and in preparing microscopic speci- 
mens and slides, and if he has a ready use of German and French it will be very 
helpful to him in his study. It is also desirable that the student should have 
had a full course in botany. The students of our college have had three terms of 
botany, one devoted entirely to microscopic botany, before they begin the study 
of entomology. I consider this very valuable preparatory work. Entomology 
is very close precise work, and the Jaboratory work if carried on for a less space 
than three hours at a time is not satsfactory. But three hours of such close work 
is very wearying unless the student has had a fitting preparation. Thus I am 
pleased that our students have had vertebrate dissection with human and com- 
parative anatomy and physiology before they commence entomology. I know 
this seems the reverse of the natural method; as nature proceeds from lower to 
higher ; vertebrate dissection is lighter and less trying to eye and brain than is 
the study of insect anatomy; thus I am pleased to have Anatomy and Physiology 
of Vertebrates precede that of the Arthropoda in our course. In our college the 
student attends a course of sixty lectures on the anatomy and physiology of 
insects, systematic entomology and the economic bearing of the subject. These 
lectures are illustrated by use of models, the student’s collection of insects, already 
referred to, by microsocopie preparations, mostly prepared at the College, and 
elaborate charts and drawings also prepared specially for our use. In connection 
with this course there are 36 hours of laboratory. Each student works three 
hours one day each week for twelve weeks. In this time they are able to study 
the internal anatomy, and to examine carefully and accurately one insect of each 
order. In connection with this several insects are traced to the genus by such 
keys as Leconte and Horn, Cresson, Williston, ete. Besides the above, each stu- 
dent makes a collection of from ten to twenty-five insects of each order, all neatly 
put up with date and locality label; each order by itself and all labelled as far as 
time will permit. Many students sueceed in naming a large number of their 
specimens. Each student is also required to mount insects in all the approved 
ways. Small insects mounted on triangular pieces of cardboard or rectangles of 
cork with silver wires, while the larve are put in bottles of alcohol with rubber 
corks and also prepared by eviscerating and drying, while distended with air, in 
a heated oven. The students are also encouraged to prepare biological collections, 
in which they preserve the eggs, larve after each moult, pupa, cocoon, imago of 
both sexes, and of various sizes and the several variations. Some of our most 
enthusiastic students work out several such life histories, describing not only the 
separate stages, but the several parasites that work to destroy the insects. I 
regard this work as very valuable. It is excellent discipline for the mind and 
observation, gives accurate information of the most interesting kind, and arouses. 
