Contents. 



126. Motor zone in Coleus . 



127. Influence of light on form 



128. Movements due to intensity of llglit 



129. Geotropism : reaction to gravity . 



130. Progeotropism. ..... 



131. Location of tlie motor zone . 



132. Diageotropism of roots .... 



133. Movements in response to a combination of geotropism and 



pliototropism .... 



134. Hydrotropism of roots .... 



135. Influence of water on form of leaves 



136. Chemotropic movements of pollen tubes 



137. Movements in response to shock . 



138. Jlovements of stamens, etc., in response to shock 



139. Movements of tendrils in response to contact 



140. Circumnutation of growing organs 



141. Carpotropic movements ...... 



142. Carpotropic movements of pedicels of Claytonia I'ii-ginica 



143. Carpotropic curvatures of Sireptocnrpiis 



144. Complex movements of inflorescence of Allium . 



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122 

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 128 

 I2g 



131 

 131 

 132 



Index 



135 



