REPORT OF THE STATE GEOLOGIST. XXV11 



interest, and such of them as are ready for publication appear herewith. 



Mr. Jermy was appointed to examine the lower portion of this area, 



in Gillespie County. A resume of his observations will be given later. 



CRETACEOUS AREA. 



In February, Mr. R T. Hill was given the study of this area north 

 of the Colorado River, which he undertook, in connection with his 

 work at the University, without any personal remuneration from the 

 Survey. Mr. J. A. Taff was appointed to carry on the necessary field 

 work under his direction. He has also had the services at different 

 times of Messrs. McCulloch, Drake, and Stone. In July, Maj. J. W. 

 Powell, Director of the United States Geological Survey, at my re- 

 quest, appointed Mr. Hill Assistant Geologist and detailed him to 

 carry on the work already begun. Under this appointment he has 

 also prepared for publication a check list of the invertebrate fossils of 

 the Cretaceous System of Texas, which has been published as Bulletin 

 No. 4, for the use of this Survey. 



CHEMICAL LABORATORY. 



Mr. J. H. Herndon, assisted by Messrs. R B. Halley and M. M. 

 Smith, performed all the analytical work, except soil analyses, which 

 was done up to the first of June. At this time the two assistants re- 

 signed, and Mr. Herndon worked alone until August, when Mr. L. E. 

 Magnenat was appointed. The arrangement by which the Survey was 

 furnished with laboratory facilities by the University of Texas was 

 terminated by that institution for want of room on October 1. I then 

 made arrangements for laboratory work in the basement of the Capitol 

 building, but two entire months were lost in getting together the 

 necessary furniture, apparatus, and supplies, and there only remained 

 the month of December for much-needed work for this report. So 

 that it is only by reason of the delayed publication that results are 

 given so fully as they are. 



Mr. P. S. Tilson was appointed chemist at the laboratory of the 

 Agricultural and Mechanical College, in January, and has been steadily 

 engaged on the analyses of the various soils of the State during the 

 entire year, with the exception of a few weeks spent with Mr. Com- 

 stock's party, in Llano county, for the purpose of collecting the soils 

 of that district for study. 



The work of the chemists appears in part in the reports of the dif- 



