CONTENTS 



NLiuiber 9. 



Page 

 Art. X. — Some Mechanical Curiosities connected with the 



Earth's Field of Force ; by W. D. Lambert 129 



Art. XI. — Fauna of the Dallas Sand Pits; by R. S. Lull. . .159 



Art. X^ll.— Dh^ca 2xilustr is Jj.^ A morphological study ; by 



T. Holm 177 



Art. XIII. — A Pseudocycas from British Columbia; bv E. 



W. Berry ' ^ 183 



