MEMO FROM TO: Calvin TX
J. LEDI 3jERG Urey RC
GENETIC> OEPARTMENT RO

STANFORD UNIVERSITY

ST ANFORER CALIFORNIA

i. ALTO,

October 12, 1959

The last issue of Amer Scientist carries
an article on "'color centers in crystals.!!
Do either of you know of any data on the
IR properties of irradiated crystals of
common minerals (e.g. silicates)? This

might be something to look out for in
interpreting Sinton's results.

yt

a. Mae Kc fox grapgernel foo
‘a

eae &

wy HES

 
   

aullh