200 



SCIENCE 



[N. S. Vol. XXXI. No. 788 



from $2,000 to $2,500, with an average of 

 $2,178.60; sis from $2,500 to $3,000, witli an 

 average of $2,616; and one or two in each of 

 the next five hundred dollar groups, to one 

 man who got $7,000. The average income for 

 the class was $2,097.25. The average for the 

 fifty-six who got less than $3,000, i. e., 83 per 

 cent, of those who reported, is $1,705.70. 

 Forty men are below the average of the sixty- 

 seven who reported. 



struoted apparatus he used in taking the exquisite 

 photographs which have given him a wide "eleb- 

 rity. A number of these were sliown, both in 

 ordinary finish and in natural-color photographs. 



At the November meeting in the same place 

 President Marshall D. Ewell described his lately 

 constructed instrument, the micro-colorimeter, for 

 comparing and testing exact and minute diiler- 

 ences of color and tint. 



Harold D. Skelton exhibited and described the 

 new Bausch and Lomb balopticon for projection. 



In Fig. 1 the number of persons in each five- 

 hundred-dollar group is shown at the point of 

 average income. In Fig. 2 we have the income 

 of each individual. 



The commercial value of a college education 

 is often discussed, and it would be a matter of 

 interest if a considerable number of statistics 

 of this sort could be secured. 



Herbert Adolphus Miller 



Olivet College 



SOCIETIES AND ACADEMIES 



THE MICROSCOPICAL SOCIETY OF ILLINOIS 



The regular October meeting of the State Micro- 

 scopical Society of Illinois was held on October 8, 

 after the usual summer intermission, at the club 

 room, Wesslick's Restaurant, Chicago. 



Francis T. Harmon gave an address on " Photo- 

 micrography," and exhibited the specially con- 



and its capabilities were tested in the projection 

 on the screen of a number of lantern slides, opaque 

 pictures and diagrams, and a variety of micro- 

 scopic slides or objects shown by various members 

 present. 



Dr. S. V. Clevenger read a paper on " Comets 

 and Star-dust," with illustrations by the balop- 

 ticon. 



At the December meeting, held Friday, Decem- 

 ber 10, Wm. F. Herzberg gave an address on 

 " Crystallography," and the methods of mounting 

 and study of crystals. Most of the evening 

 was spent in study under the microscope of the 

 objects exhibited by the members present. 



It was resolved to give another soir4e similar 

 to the very successful one of last year, and a 

 committee of arrangements was appointed. 



Albert McCalla., 



Secretary 



