November 29, 1912] 



SCIENCE 



739 



very rich country, primarily for the study of 

 the seasonal distribution, life-history and hab- 

 its of Odonata, but including references to 

 other groups of insects, characteristics of vari- 

 ous collecting grounds and topics of general 

 interest. 



Mr. Newton D. Baker, mayor of the city of 

 Cleveland, will give a series of public addresses 

 on four successive Sunday evenings, at 8:00 

 o'clock, in the Amasa Stone Memorial Chapel 

 of Western Reserve University. The dates 

 and subjects are as follows: 

 November 24 — ' ' The City 's Housekeeping. ' ' 

 Beeember 1 — "The City's Safety." 

 December 8 — ' ' The City 'a Health. ' ' 

 December 15 — "The City's Ideals." 



This series of lectures is a part of the univer- 

 sity's program of coordination with municipal 

 and other public interests. 



The College of Engineering of the Ohio 

 State University will offer a course of nine lec- 

 tures this winter. Prominent engineers and 

 business men will be among the speakers. The 

 purpose of the course is to broaden the ac- 

 quaintance of the engineering students in the 

 general field of engineering. On January 24, 

 Mr. C. E. Skinner, M.E., of the Westinghouse 

 Company, will lecture on " Research in its 

 Relation to Manufacturing Problems." 



Professor C. E. A. Winslow, of the Col- 

 lege of the City of New York, lectured on No- 

 vember 21, before the Columbia Chapter of 

 the society of Sigma Xi, on " Some Newer As- 

 pects of the Public Health Campaign." 



In a recent address before the Minnesota 

 Pathological Society, Professor Ludwig Hek- 

 toen, head of the department of pathology and 

 bacteriology in the University of Chicago, dis- 

 cussed the epidemics traceable to contamina- 

 tion of milk with streptococci, particiilarly the 

 epidemic of sore throat in Chicago last winter 

 which involved not less than 10,000 cases and 

 was traced to contamination of a definite milk 

 supply. 



At the meeting of the College of Physi- 

 cians, Philadelphia, on November 6, portraits 



of the late John H. Musser, Isaac Hays and 

 Wharton Sinkler were presented to the col- 

 lege, the addresses being made by Drs. George 

 A. Piersol, George E. DeSchweinitz and 

 James C. Wilson, respectively. 



Dr. Arthur Tracy Cabot, the distinguished 

 Boston surgeon, a fellow of the corporation of 

 Harvard University, has died at the age of 

 sixty-two years. 



The death is announced, at the age of ninety 

 years, of M. Aime Pagnoul, a correspondent of 

 the Paris Academy of Sciences in the section 

 of rural economy. 



A committee consisting of Drs. Clarence 

 John Blake, John Warren and Frederic T. 

 Lewis, appointed to prepare a memorial to Dr. 

 Leonard Worcester Williams, has presented 

 the following report: 



Dr. Leonard Worcester Williams, instructor in 

 comparative anatomy, died in the thirty-eighth 

 year of his age, while absorbed in his work at the 

 Harvard Medical School. Dr. Williams was a 

 naturalist by instinct and education, and took 

 great delight in examining marine creatures of 

 all sorts. In this way he acquired rare technical 

 skill in dissection and broad knowledge of the 

 structure of animals. In 1907 he joined the 

 department of comparative anatomy, and became 

 at once a welcome and most valuable member of 

 the staff. Exquisite preparations remain as per- 

 manent mementos of his industry, and his publica- 

 tions are those of an earnest student, careful, 

 painstaking and exact. Of Dr. Williams's per- 

 sonal traits none was more generally recognized 

 than his obliging readiness to help others. During 

 the recent Otologieal Congress he left his work at 

 the Biological Laboratory in Woods Hole to ar- 

 range and direct the display of microscopic speci- 

 mens. For two weeks in mid-summer his time was 

 at the disposal of the congress, in one form or 

 another of helpfulness. In recognition of such 

 loyal service, freely rendered throughout the five 

 years that Dr. Williams was our associate, we 

 record our high appreciation of his labor in our 

 behalf, and our deep sense of loss in his death. 



In connection with Mr. Andrew Carnegie's 

 ofl^er to provide pensions for future ex-presi- 

 dents of the United States and their widows 

 — chiefly interesting to university men for the 



