I02 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES 



practical value of logaxithms, the properties of tlie conchoid and of the 

 cycloid curves and the method of trisecting an angle, all of "which de- 

 veloped points of real interest to the members. 



At the May meeting the Section enjoyed another rare treat in. the 

 presence of Bishop Warren of the Methodist Conference, a man of aa- 

 tronomieal erudition and reputaxion,- "who m.ade a delightful address 

 before the Section. 



The Section is greatly indebted to its energetic and capable Chair- 

 man for the well sustained interest in its monthly gatherings. 



MELVILLE DOZIEE, Secretary. 



WM. H. KNIGHT, Caiairman. 



Annual Report* of Section of Biology 



I have the honor to make the following report of the work done in 

 the Biological Section of the Academy for the year: 



During the year ending June, 1904, the Biological Section has held 

 nine meetings. The average attendance of the meetings has been about 

 forty. The subjects discussed in these meetings are of such deep in- 

 terest and are so creditable to tthe^ Section that I present you with a list 

 of all of the formal lectures: 



Dr. A. D. Houghton, "The Caetaeeae.'^ 



Dr. Louisa Burns, "Blood Examinations and tihe Nissl Bodies." 



Dr. C. A. Whiting, "Anemia and Leukemia and Ehrlich's Theory 

 of Immunity. ' ' 



Prof. Joseph Grinnell, "The Mid-Winter Birds of Los Angeles and 

 the Geographical Distributon of Animals." 



Dr. B. F. Ga-mber. "Malaria." 



Dr. Lyman Gregory, "The Autogeny and Phylogeny of the Eye." 



Prof. B. M. Davis, ' ' The Larval Balanoglossus. ' ' 



Dr. Leonard, "Some Bacilli Belated to the Bacilli of Tuberculosis." 



Aside from the formal lectures, which I have presented, there have 

 been a great number of very interesting and valuable discussions. 



At a considerable number of the meetings there have been exhibi- 

 tions of microscopical preparations, some of them of deep scientific 

 interest and others very interesting from a popular standpoint. 



Every effort will be made next year to make the work of the 

 Section of even greater value to its meonbers and to the public than 

 it has been in the past. 



Yery respectftillv submitted, 



C. A. WHITIXG, Secretary. 



A. B. ITLEEY, Chairman. 



Annual Report of Section of Geology for Year 

 Ending June, 1904 



The meetings have been well attended and much interest has been 

 sihown throug'hout. 



September 28, 1903, Prof. Julius Koebig, city chemist, lectured on 

 "The Deposits of Alkaline Salts" and their method of formation. 



October 26, Mr. C. J. Callahan gave an interesting talk on the 

 ' ' Origin of Petrolettm. ' ' 



Xovember 23, Prof. E. H. Fosdick favored us with a very instrue- 



