22 STEREOSCOPIC PHOTOGRAPHY 



A B by means of two screws passing through the 

 slot. To this underpiece the carrier G H is made 



Ordinary American Stereoscope. 



a fixture, and the two wires G and H turned at 

 right angles to their present position. These grip 



How to adapt same for looking at stereoscopic pictures in a book. 



the outer edges of the book, and the sight can be 

 adjusted by sliding the lens-holder to and from 

 the picture, along the lower slip C D. 



HOW TO MAKE A PORTABLE TENT 



Mr. Westell desires me to add anything that I 

 can with regard to the general subject of Nature 



