CONTENTS 



PROBLEM 



120. How animals may benefit mankind .... 



121. To find out how birds are of economic importance 



122. What are the causes of decrease in the number of birds ? 



123. To study the life history of the mosquito . 



124. To find the breeding places of mosquitoes in any locality and how to 



destroy them ... ... 



125. To determine some methods of destroying mosquitoes 



126. To find the relation of mosquitoes to diseases of man 



127. To study the life history of the parasite causing malaria 



128. To study the life history of the typhoid fly 



129. To determine the harm done by the fly and the way it does this harm 



130. What is the best way to catch and destroy flies ? (Homework) 



131. To determine harm done by insects 



132. To know some forms of animal life that cause disease 



PAGE 



148 

 148 

 149 

 149 



133. 

 134. 

 135. 

 136. 



139. 

 140. 

 141. 

 142. 

 143. 



146. 

 147. 

 148. 

 149. 



XVI. The Fish and Fkog, an Introdiictort Study of 

 Verteekates . 

 To determine how a live fish is fitted for life 

 To study food getting by the fish 

 To study the sense organs of the fish . 

 To study some of the internal organs of a fish 



137. To study the skeleton and central nervous system of the fish (Extra) 



138. How fishes are artificially propagated 



Trip to the aquarium (Optional, in place of Problems 133 and 138) 

 To determine some adaptations in a living frog . 



Adaptations of appendages for locomotion 



Adaptations for sensation 



Adaptations for food getting . 



144. Adaptations for breathing ... ... 



145. Museum trip to study the frog group (Extra problem based on trip 



to American Museum of Natural History) . 



To collect and study frogs' eggs 



To study conditions favorable for development of frogs' eggs 



To study the metamorphosis of the frog 



To work out a comparison of development of the vertebrates 



XVII. Heredity, Variation, Plant and Animal Breeding 



150. To determine if there is individual variation in any one measure- 



ment of the members of a given class . 



151. To show variation in a given class 



152. Does heredity play any part in our lives ? . 



153. To study the fine structure of an egg cell . 



154. How selection is made .... 



155. A practical result of selection 



