2640 



Journal of Applied Microscopy 



testimony is not a mere statement of opinion, which has but Httle weight, but 

 rather a pointing out of significant facts. 



Photo-micrographs of parts of questioned writings are frequently very useful, 

 and in some instances are absolutely conclusive. Such enlargements show 



Fig. 4. — Ink lines across folded paper, also broken ink lines. Longer 

 lines at the left preceded the folding. The line at the right fol- 

 lowed the folding. Original lines about 1/125 of an inch in 

 width. 



plainly in permanent form what cannot be seen at all without the microscope. Per- 

 fect photo-micrographs of from twenty to fifty diameters' enlargement are easily 

 made by using special photographic objectives and a regular camera, and such 

 illustrations are easily verified by comparison with the actual image as seen in 



Figure 5. Retouched writing showing projecting edge of original line being part of a forged 

 signature. Transmitted light photo-micrograph. 



the microscope itself. For such work it is desirable that a camera should have 

 a comparatively long bellows and an adjustable object board connected with the 

 bed of the camera. 



