340 



THE GUIDE TO NATURE. 



boy's shoulder overlaps the top ex- 

 posure, and exemplifies one of the 

 most difficult feats to accomplish with- 

 out having the first picture show 

 through and spoil the second. Did 

 you ever try to photograph the same 

 animal for four times in succession and 

 not have him move and spoil the pic- 

 ture ? 



From this kind of work I have learn- 

 ed something that has a practical val- 

 ue and should appeal to every amateur 

 photographer. We all have found sub- 

 jects, one part of which was in sha- 

 dow, the other being in bright sun- 

 light, where an ordinal'} exposure 

 would not give the desired results, and 

 doubtless we have gone away hoping 

 to return when the light should be 

 right. 



Look at the ravine picture in 

 which apparently the light was uni- 

 form, as to the exposure, yet the left 

 bank is in the shade of heavy hemlock 

 woods, and only by a double exposure 



could I get satisfactory results. 



I here put my slide before the lens 

 as a duplicator, and guessing at the 

 proper length of time, I exposed for 

 the sunlight. Reversing the slide, I 

 exposed for the shadow, giving the 

 left side of the picture four times the 

 exposure of the right. The result was 

 an evenly exposed plate. 



The principle of the duplicator 

 brought thus into practical use, must 

 appeal to every amateur photographer. 

 The range is so wide, and the fun to 

 be had, as shown in the first pictures, 

 is so great that it is a wonder that more 

 amateurs do not take up this fascinat- 

 ing sport. 



AN OMITTED CEED1T. 



The double photograph on the bottom of 

 page 242 of the October number of "The 

 Guide to Nature" was taken by Arend Du- 

 bee, Beloit, Wisconsin. 



DOUBLE EXPOSURE OF AN UNEVENLY LIGHTED SCENE. 

 By this method, the detail of the heavily shaded portion was brought out and the 

 -well lighted part was not over exposed. 



