TABLK OK CONTENTS 



NO. 1. 



Projective Groups of Perspective Collineations in the Plaxe, 



Treated Synthetically Arnold Emch i 



HOPLOPHONEUS OCCIDENTALIS E. S. Rigf[S 37 



One of the Dermal Coverings of Hesperorxis S. //'. IVilliston 53 



The Duty of the Scholar in Politics I- rand Hayzvood Ilodder 55 



NO. 11. 



Continuous Groups of Projective Transformations Treated 



Synthetically , 11. B. Xeiu^on Si 



Theory of Compound Curves in Railroad ENOixEERixci. ...-/;■;/ o/r;' /s'wc// gg 



The Visual Perception of Distance John K. Rouse log 



The Limitations of the Composition of Verbs with Preposi- 

 tions IN Thucydides Dal' d 11. Holmes iig 



Editorial Notes 



