LIST OF EXERCISES (Continued] 



EXERCISE 



. 77. BLOOD AND GAS EXCHANGE 



EXERCISE 



_112. TEMPERATURE AND DEVELOPMENT 



. 78. CHANGES IN COMPOSITION OF BLOOD 



. 79. EXERCISE AND THE PULSE 



. 80. EXCRETION 



. 81. EXCRETION IN ROOTS 



82. THE KIDNEY 

 . 83. THE SKIN 



. 84. TYPES OF EXCRETORY ORGANS 

 . 85. PLAN FOR AN EXPERIMENT 

 . 86. CONTROL OF THE REFLEXES 



87. BRAINLESS ACTS 

 . 88. THE SENSE OF TOUCH 



89. FEELING HOT AND COLD 



90. THE SENSE OF TASTE 



91. DETECTING FLAVORS 



. 92. NEAR SIGHT AND FAR SIGHT 



93. FEELING LIGHT WITHOUT EYES 

 . 94. THE EARS 



95. ACUTENESS OF HEARING 



96. KEEPING A BALANCE 

 . 97. INHIBITION 



. 98. COMMON LIFE PROCESSES 



99. NUTRITION OF CELL AND OF ORGANISM 

 .100. RESPIRATION OF CELL AND OF ORGANISM 

 .101. EXCRETION OF CELL AND OF ORGANISM 

 102. COMPARATIVE STUDY OF NUTRITION 

 . 103. COMPARATIVE STUDY OF RESPIRATION 

 . 104. COMPARATIVE STUDY OF EXCRETION 



105. LOCOMOTION: ANALOGIES AND HOMOLO- 



GIES 



106. REACTIONS TO DISTURBANCE 

 . 107. FOOD-GETTING AND EATING 



108. RELATION OF VOLUME AND AREA 



109. REGENERATION 

 . 110. SEGMENTATION 



.111. MOSQUITO, LIFE' HISTORY 



113. SPORE DISTRIBUTION 



114. SPIROGYRA CONJUGATION 



115. GERMINATION OF SPORES 



116. THE FLOWER 



117. FLOWER STUDIES 



118. THE POLLEN TUBE 



. 119. WIND POLLENATION 

 . 120. INSECT POLLENATION 

 .121. THE FRUIT 

 122. DISTRIBUTION OF SEED 

 . 123. LIFE HISTORY OF Moss 



124. LIFE HISTORY OF FERN 



125. SPOROPHYTE AND GAMETOPHYTE 

 . 126. ALTERNATION OF GENERATIONS 



127. PARENTAL CARE 

 . 128. RELATION OF LIGHT TO GROWTH 



129. SEASONAL CHANGES 



130. STRUGGLE AND SURVIVAL 



131. CHANGES IN PIGMENTATION 



132. PROTECTIVE MOVEMENTS 



133. HOMOLOGY : PROTECTIVE ORGANS 



134. PROTECTIVE ACTIVITIES 



135. FALL OF LEAVES 



136. THE FOREST FLOOR 



137. MOUTH WASHES 



138. ECONOMIC MICROORGANISMS 



139. FLIES AS DISTRIBUTORS OF GERMS 



140. FLY SURVEY 



141. MOSQUITO SURVEY 

 . 142. ECONOMIC INSECTS 



143. BIRDS 

 . 144. VARIATION 



145. RATIO OF DOMINANTS AND RECESSIVES 

 IN HYBRIDS 



[vi] 



