kinds lit food, particularly in populous centers, and ;i stern regulation 

 nf the dairies. His scientific discourse was supplemented with striking 

 incidences of the difficulty of obtaining appropriations from legislative 

 Imilics for carrying on this work, when matters of trivial importance 

 received liberal donations. 



Dr. George II. Kress, secretary nf the Public Health Commission, 

 gave a must interesting history of the discovery of the menus by which 

 yellow fever and the bubonic plague are disseminated, illustrating his 

 tall? with stereopticon views of the mosquito and the ra1 flea, and the 

 domestic llv, and he expatiated upon the work in San Francisco of 

 exterminating the rats. His stereoptieon views over the city, of the 

 pal] of carbon sunt and chemical gases, su fatal to cleanliness, comfort 

 and health, thrown oul by the chimneys of the manufacturing plants 

 of greedy corporations, and the engines of the Southern Pacific Company 

 in open defiance of the ordinances and the repeated protests of the city 

 officers, were a must striking object lesson. He showed whal good 

 work had been done, even with the limited means at his disposal, in 

 the inspection of small hotels and cheap lodging houses, where were 

 found oo means of ventilation, and no attempts made for cleanliness 

 in the furniture, bedding or carpets, and which were becoming centers 

 for the dissemination of disease. A great advance for the health of 

 the community would be made by the establishment of public baths and 

 comforl stations, and the consenl of property-owners to the rat-proofing 

 nf buildings by concrete floors. 



The milk question was an important feature of the discourse of 

 Dr. Kress, and he explained how rapidly diphtheria, tuberculosis, scarlet 

 fever, diarrhoea and other diseases are carried to a community by impure 

 milk. The difference between the regulated and inspected sanitary dairy 

 and the foul sheds of the milk pirate, the inevitable source of disease 

 and death, was must vividly exhibited upon the screen. 



In showing the work of the City Health Office, Dr. L. M. Powers, 

 Health Officer, emphasized the vital necessity of a proper disposal of the 

 garbage, and the difficulty of inculcating an appreciation among citi- 

 zens, especially in the poorer districts, of their danger in allowing filth 

 nn, I decaying food to collect about their habitations. He was much 

 encouraged by the change for the better in the water and milk supply 

 of this city by reason <>\' the power given to inspectors by the late 

 stat nt ( s. 



All the discourses n\' Hie evening were nf the must absorbing inter- 

 est and received marked attention by the audience. Vice-President 



Knighl anni ced the subjeel fur the January meeting to lie "The 



btomance of Man; Epochs in His Intellectual Evolution," by Presidenl 

 I laumga rdt. 



JANUARY, 1909. 



At the meeting of the Acade*my on January 4. .Mr. B. K. 

 Baumgardl gave an address on "The Intellectual Evolution of 

 Man," illustrated with lantern views, lie commenced with 

 examples of the rhythmical processes in all departments of 

 nature, and In- showed thai human progress was governed by 

 tlic same laws. 



Mankind lias had stages of intellectual activity, ami then 

 for a time came a rest, and even a seeming retrogression. 

 lie divided history into six epochs. Disregarding the early 

 Aryan development of Asia. Hie dawn may he stud to have 

 been ushered in from four 1«» seven thousand years before the 



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