484 FARM AND SCHOOL PROBLEMS. 



The following are some of the firms dealing in agricultural 

 apparatus and school supplies: 



The Standard Soil Tester Co. Milwaukee, Wis. 



The Central Scientific Co. Chicago, 111. 



C. H. Stocking o. Chicago, 111. 



L. E. Knott Apparatus Co. Boston, Mass. 



Chicago Apparatus Co. Chicago, 111. 



The Ohio Valley School Supply Co. Cincinnati, O. 



W. M. Welch Mfg. Co. Chicago, 111. 



Beaver Bros. 58 Douglas Bldgs., Columbus, O. 



The Columbia School Supply Co. Indianapolis, Ind. 



The Kauffman-Lattimer Co. Columbus, O. 



Dobson-Evans Co. 'Columbus, O. 



The Educational Supply Co. Painesville, O. 



References. 



ILLUSTRATIVE MATERIAL. 



Much of the following material may be secured free or at 

 small cost by writing to : 



1. Products of corn. Products of Corn Refining Co., New York City. 



2. Products of silk. Cheney Bros., South Manchester, Conn. 



3. Products of mines. German Kali Works, New York City. 



4. Products of wheat. Washburn-Crosby Co., Minneapolis, Minn. 



5. Products of wheat. Northwestern Milling Co., Minneapolis, Minn. 



6. Products of cottonseed. The American Cotton Oil Co., Cincinnati, 

 Ohio. 



7. Fertilizers. Any fertilizer company. 



8. Cocoa and Chocolate Products. Walter Baker & Co., Dorchester, 

 Mass. 



9. Sugar Refining Co., Brooklyn, N. Y. 



10. Pictures. International Harvester Co., Chicago, 111., Harvester Bldg. 



11. Pictures.^ Singer Sewing Machine Co., Cincinnati, Ohio. 



12. Seeds. Congressman from your district. 



13. A Seed Catalogue. 



14. Trees for Public School Grounds. Your Experiment Station. 



15. Oil Products. Standard Oil Co., New York. 



16. Audubon Leaflets. National Audubon Society, 141 Broadway, New 

 York City. 



17. Food Products. Any manufacturer. 



