INDEX TO VOLUME XXII 



239 



Some Common Misconceptions of 

 Evolution 173 



Some Sub-Surface Rock Channels 

 and Cavities Filled with Glacial 

 Material 125 



Stenocranus, Synopsis of Genus. . 69 



Sub-Surface Rock Channels and 

 Cavities Filled With Glacial 

 Material 125 



Syrphidae, Descriptions of Alaskan 143 



The Classification of Plants. XII 129 

 The Homologies of the Tracheal 

 Branches in the Respiratory 

 System of Insects 84 



The Sexual Nature of Vegetative 

 or Dichotomous Twins of 

 Arisaema 149 



Thunderstorms; Especially those 

 of Ohio 21 



Tracheal Branches in Insects. .. . 84 



Twins of Arisaema, Sexual 



Nature of 149 



Vegetative or Dichotomous Twins 

 of Arisaema 149 



Woodchuck. Growth of Incisor 

 Teeth 170 



