370 ANNUAL EEPORTS OF DEPARTMENT OF AGRICULTURE. 



confine the attendance at meetings to gatherings of official bodies, 

 and to meetings and conferences of sufficient importance to justify 

 the attendance of department representatives. 



A total of 263 lectures and addresses were delivered, as compared 

 with 655 lectures in 1916. The total attendance at meetings was 

 43,184, as compared with 92.610 in 1916. The average attendance was 

 164, as compared with 142 for the previous year. These lectures and 

 addresses were delivered mostly before scientific, civic, and agricul- 

 tural organizations and before road schools held at universities and 

 colleges. The road schools were attended largely by local road offi- 

 cials, thus giving the office an excellent opportunity to convey help- 

 ful advice and information to those who are actually in charge of 

 local road work. 



MODELS AND EXHIBITS. 



Models and other exhibit materials were used during the year 

 at expositions, conferences, conventions, and fairs to illustrate the 

 best methods of road, bridge, and culvert construction, road drainage, 

 maintenance, repair, roadside treatment, equipment, machinery, etc. 

 This exhibit material is built and maintained by the office, but all 

 expenses in connection with its transportation, installation, and 

 demonstration are paid by the organizations benefited. 



This work was carried on in cooperation with the Office of Ex- 

 hibits. Exhibits were made during the year at the places and under 

 the organizations indicated as follows : 



Third annual convention of the Cotton States Merchants' Associa- 

 tion, Memphis, Tenn., August, 1916. 



State Fair, Louisville, Ky., September, 1916. 



State Fair, Syracuse, N. Y., September, 1916. 



Southern Appalachian Good Roads Congress, Lexington, Ky., Sep- 

 tember, 1916. 



Westchester, Pa., County Fair, September, 1916. 



Dry Land Congress and Exposition, El Paso, Tex., October, 1916. 



New York conferences of road supervisors, Jamestown, N. Y., 

 October and November, 1916. 



Grange Golden Jubilee, Ashville, N. Y., September, 1916. 



Western Pennsylvania Exposition, Pittsburgh, Pa., August and 

 September, 1916. 



State Fair, Columbia, S. C, October, 1916. 



National Farm and Live Stock Show, New Orleans, La., November, 

 1916. 



Iowa State College, Ames, Iowa, August, 1916. 



Lucas County Fair, Toledo, Ohio, August, 1916. 



San Diego, Cal., Exposition, July, 1916, to January, 1917. 



Cement Products Exposition, Chicago, February, 1917. 



American Road Builders, Boston. Mass., February, 1917. 



Massachusetts Institute of Technology, Cambridge, Mass., Febru- 

 ary to September, 1917. 



PHOTOGRAPHIC WORK. 



The photographic laboratory prepared 2,248 negatives, 10,793 

 prints, 1,383 lantern slides, and 282 bromide enlargements. There 



