Smithsonian Report 1951. — Zapffc 



Plate i 



1. Photomicrograph of 50:50 antimoii}:::. .: _, ; i eicliing 



with a chloride solution. The white skelctonlike lorms are dendrites, representing a 

 phenomenon of growth generally characteristic of all organized matter, from crystals to 

 plant and animal life. They contain excess antimonv and resist chemical attack. .Mag- 

 nified 225 times. 



/. rraci. _ ; tomicrograph of an unpolished and unetched fracture surface — 



for metallic bismutii, showing geometric markings which contain the storv of deformation 

 and fracture. Magnified 35 times. 



