IT. s. GEOLOGICAL SURVEY 



PROFESSIONAL PAPER 131 PLATE I 





4 5 



CUPRESSINOXYLON WILCOXENSE BERRY. 



1, Transverse section showing growth rings from Shreveport, La.; 2, similar section from Caddo Lake, La.; 3, radial seotion from 

 Caddo Lake, La.; 4, similar section from Shreveport, La.; 5, tangential section from Caddo Lake, Lu. All enlarged 2U diameters. 



