S6 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES 



amounts to $3000,000,000 per annum, and for the control of which the 

 government spends only $150,000 a year. 



In a paper read by B. E. Furnow at the meeting of the Americas 

 Science Association, the estimates given of the growth and consumption 

 000 acres of alkali soil in the "West can by proper drainage be made 

 able timber will be exhausted in 30 years. 



The officers of the Bureau of Soils believe that much of the 6,000,- 

 of the wood supply of the United States would indicate that all the avail- 

 productive. 



As natural immunity to the effects of bee stings is acquired by many 

 individuals after being stung from 1 to 30 times, it is suggested that 

 artificial immunization might be made possible by means of serum vac- 

 cination. 



Publica-tions Received. 



' ' Combating the flat-headed Bprer, " by A. J. McClatehie, Univer- 

 sity Arizona, Agricultural Experiment Station. Timely Hints for 

 Farmers, No. 45. 



Thirteenth Annual Eeport Agricultural Experiment Station, Univer- 

 sity of Arizona. " 



"The Culture of Mulberry Silkworm,' Division Entomology. Bulle- 

 tin No. 39 United States Department Agriculture. 



"Experiment Station Record," No. 6, Vol. 14, United States Depart- 

 ment of Agriculture. 



"The Lime, Sulphur and Salt Wash Used for San Jose Scale," 

 United States Department of Agriculture. Circular No. 52. 



'Methods for the. Investigation of Canceling Inks and Other Stamp- 

 ing Inks." United States Department of Agriculture, Chemistry Bureau. 

 Circular No. 12.. 



"Los Criaderos de Fierro del Cerro de Mercado, Durango. " Bulletin 

 of Geological Institute of Mexico. No. 16. 



Transactions. 



Los Angeles, Cal., March 23rd, 1903. 

 The Geological Section of the Academy of Sciences met at the 

 Woman 's Club Rooms at 8 P. M. Chairman George \V. Parsons called 

 the meeting to order. Minutes of previous meeting read and approved. 

 Dr. Stephen Bowers, Ph. D., read an article on the ' ' Depest Wells of 

 the World." He stated that the Comstock Mine which was 3300 feet 

 in depth was the deepest mine on the Pacific Coast; that the heat was 

 so great that a large number of shifts were required each day. The 

 deepest well ever drilled in the world was in Eastern Silesia, which 

 reached the' depth of 6,511 feet, the temperature at the bottom being 

 157 degrees. He also mentioned a deep well near Berlin of 4170 feet, 

 and one near Leipsie wnieh reached the depth of 5740 feet, with 

 temperature of 135 degrees at the bottom. At Wheeling, West Va., 

 a well was sunk 4500 feet, the temjierature at the bottom was 110 de- 

 grees. The deepest well on tliis Continent was sunk at West Elizabeth, 

 Pa. to the depth of 5386 feet. The temperature at the bottom was 127 

 degrees. In drilling this well they passed through 137 distinct forma- 

 tions, 68 were slate, 22 limestone, 27 sandstone, 7 of red rock, 4 coal 

 seams, and stratas of shale; 90 of the stratas were of deep water for- 

 mation, and 34 formed in shallow water. They reached the upper 

 Silurian or lower Devonian, and each of the 137 formations indicated a 

 period of untold ages. Questions and discussions followed in which 

 Messrs. Crosby, Parsons and Taber took part. 



G. MAJOR TABER, Secretary. 



