CHARGES FOR A D1/ERTISEMENTS. 



OUTSIDE COVER. Each insertion- 

 Whole page . . . 30s. 

 Half page . . . 15s. 

 Quarter page . . . 7s. 6d. 



INSIDE COVER. Each insertion- 

 Whole page . . . 20s. 

 Half page . . 10s. 



Quarter page . . . 6s. 



Two Publications of Interest to Malacoiogists. — The 



undersigned has ready for distribution the Directory of American 

 Conchologists and a Catalogue of Author Abbreviations. The 

 former contains the names, addresses, and particulars of about 

 315 conchologists in North and South America. Either publication 

 may be had post free for 25 cents (Is. coin and \d. unused stamp 

 accepted) . Only 1 50 copies of the Directory remain unsold. 

 Address : Maxwell Smith, Hartsdale, New York, U.S.A. 



