270 REPORTS ON THE STATE OF SCIENCE, ETC. 



geology attacked by the mathematical method, and in that respect it was 

 not only novel but almost unique. 



The paper inquired into ' The extent of temperature rise produced by a 

 lava flow on underlying rock, and the influence of such heating on an ore 

 deposit formed there.' 



An actual example, namely the Camp Bird gold mine in south-west 

 Colorado, had been chosen by Boydell for his investigations. 



The Camp Bird deposit is briefly described. In the summary given by 

 the author, Boydell enumerates the conclusions drawn from his investigations. 



Results of Well Temperature Tests in Wyoming. 



By Bravity Taylor. 



The Petroleum Engineer, Dallas, Tex., vol. 3, no. 8, 1932, p. 64. 



The author gives a brief description of a series of experiments carried 

 out by the State oil and gas inspector of Wyoming relative to the temperatures 

 obtained in wells in that State. 



The description of the apparatus used to obtain temperature measure- 

 ments in wells with the accuracy required for a study of this nature is 

 accompanied by an illustration. 



The operation of the apparatus is explained. 



The average run of well-bottom temperatures in Wyoming has been 

 found, according to the experiments, to be between 90 and 180 . It has 

 been found that the time element in taking temperatures is a very important 

 one. The deepest well in Wyoming, at 8,725 ft. in the second Wall Creek 

 sand, was found to have a temperature of 140 . 



Relation of Earth Temperatures to Geological Structure. 

 By John A. McCutchin. 

 The Oil Weekly, Houston, vol. 65, no. 2, 1932, pp. 21-26. 



The purpose of this research has been to determine the possibility of 

 using temperature data for the location of future oil pools, particularly in 

 areas where the generally used geological and geophysical methods meet 

 with little success. 



Detailed temperature surveys have been made by the author in over 

 300 wells located in forty oil-fields of Oklahoma and Kansas. While the 

 relations in any field in these areas are practically the same, the relations of 

 earth temperatures to geologic structure in the Dilworth field of Kay 

 County, Okla., have been chosen to illustrate the possibilities of using earth 

 temperatures to locate oil-fields. A brief history of the study of earth 

 temperatures and a description of method and apparatus are given. 

 According to two parts of a plate added to the article, a marked relation 

 between geologic structure and the present observed position of the isothermal 

 surfaces in the south dome of the Dilworth field is shown. 



The author concludes : ' The results of the temperature observations 

 made in the Dilworth field and in many other fields of Oklahoma and Kansas 

 indicate that this problem has commercial possibilities as a new geophysical 

 method of locating buried structure. It is to be remembered, however, 

 that all these observations have been made in proved fields and abandoned 

 wells and until the method has been tried in a new area, either by making 

 temperature observations in core drill holes or drilling wells, it will remain 

 as a possibility and not as a proved fact.' 



