NOTE TO THE ARTICLE ON " FORAMINIFERAL 

 OOZE IN THE COAL-MEASURES OF IOWA/ 



Since the publication of my article on " Foraminiferal Ooze 

 in the Coal-measures of Iowa," which appeared in the preceding 

 number of the Journal, I have found, while at work on the Uni- 

 versity of Texas Mineral Survey, another bed of minute foram- 

 inifera in the Upper Carboniferous of Texas, on the east foot- 

 hills of the Chinati mountains. The Upper Carboniferous has a 

 thickness here of probably more than 3,000 feet, and the upper 

 member consists of a series of limestones, several hundreds of 

 feet in thickness, evidently equivalent to "the upper or white 

 limestone" described by Tarr in his "Reconnaissance of the 

 Guadalupe mountains" [Geol. Surv. of Texas, Bull. No. j, p. 29). 

 The small foraminifera are also here associated with Fusuli?ia 

 cyli?idrica, and occur most frequently in the lower 200 feet of 



this limestone. 



J. A. Udden. 

 Shafter, Tex., 

 May 9, 1903. 



'Jour. Geol., No. 3 (April-May, 1903), p. 283. 



430 



