In the Land of Cave and Cliff Dwellers

A New Snake of the Genus Geophis From Chihuahua, Mexico

The Author's Printing and Publishing Assistant Comprising Explanations of the Process of Printing; Preparation and Calculation of Manuscripts; Choice of Paper, Type, Binding, Illustrations, Publishing, Advertising, &c.; with an Exemplification and Descrip

Wood Rangers_ The Trappers of Sonora