20 GEOLOGICAL SURVEY OF ALABAMA 
the Avery collection were identified by Dr. H. C. Ober- 
holser of the same bureau. Thanks are also due Dr. 
Thomas M. Owen, director of the State Department of 
Archives and History, for granting access to the Avery 
books and correspondence on file in his department. 
But the writer is especially indebted to Mr. Lewis S. Gol- 
son of Prattville, Alabama, for his assistance in working 
over the collection, and to Dr. Eugene A. Smith, State 
Geologist, for making possible the entire undertaking. 
; ERNEST G. HOLT. 
Barachias, Ala. 
May 22, 1919. 
