152 



EXAMPLES OP PSEUDO-CRYSTALLIZATION. 



taking theui, for both the markings and the lenses being trans- 

 parent, they could only be taken by light reflected at a certain 

 angle. The markings then presented a silvery appearance upon 

 a black background 



No. I. 



No. II. 

 Peculiar fracture of the cement between the compound lenses 

 of a field-glass. The resemblance to crystallizations is much 

 more close in the originals than in the photographs and wood- 

 cuts. — A.L. 



