xxii LIST OF ILLUSTRATIONS 



FIGURES PAGE 



91. The apple tree in Fig. 90 after pruning 136 



92. Pruning saw 136 



93. Folding pruning saw 137 



94. Pruning saw 137 



95. Pruning shears 137 



96. Pruning shears ' 137 



97. Pruning shears 138 



98. Showing construction of Cippoletti weir 150 



99. Cherry blossom 158 



100. Fertilization 160 



101. Multiplication of cells after fertilization 161 



102. Pistil of walnut, showing large stigma 161 



103. Pollen-grains 162 



104. Pollen-grains of the Drake almond 163 



105. Showing Van Teighem cell with pollen-grains mounted for 



examination under a binocular microscope . ... 166 



106. Germination of Black Heart sweet cherry pollen .... 167 



107. Photomicrograph of California almond pollen-grains ger- 



minating 167 



108. Position of the fingers for emasculating 173 



109. Cutting through the calyx with the finger-nails .... 173 



110. The perianth removed ." ; . . . 174 



111. One of the parent Washington Navel orange trees still grow- 



ing in Riverside, California 197 



112. Proper depth to set strawberry plants 207 



113. A grape-vine pruned and tied to the long-cane system . . 217 



114. Unit of short pruning the grape 218 



115. Unit of long pruning the grape 219 



116. The codlin-moth, showing stages in life history .... 228 



117. Larva of flat-headed borer 230 



118. Adult of flat-headed borer 230 



119. The plum curculio 235 



120. The plum gouger and its work 236 



121. Scale insects three mature Citricola and one black scale 237 



122. A parasitized larva 239 



123. The Eyed Ladybird and Ash-Gray Ladybird, predaceous on 



aphids; the Black Ladybird predaceous on black scale; the 



Mealy Bug destroyer 239 



124. Aphids or plant-lice 240 



125. Red-spider 240 



126. A fungus, showing spores . 248 



