182 MISC. PUBLICATION 2 81, U. S. DEPT. OF AGRICULTURE 

 Tingey, D. C. (3296) 



SPONTANEOUS COMBUSTION ON WEED PLOTS SPRAYED WITH A SOLUTION OF 



atlacide. Jour. Amer. Soc. Agron. 25: 297, 299, illus. 1933. 

 Wahlenberg, W. G. (3297) 



INVESTIGATIONS IN WEED CONTROL BY ZINC SULPHATE AND OTHER CHEMICALS 

 AT THE SAVENAC FOREST NURSERY. U. S. Dept. Agr. Tech. Bull. 156, 



35 pp., illus. 1930. 



Waldron, L. R. (3298) 



noxious weeds and how to kill them. N. Dak. Agr. Expt. Sta. Bull. 

 56, pp. [201J-243, illus. 1903. 



Welton, F. A., Morris, V. H., and Hartzler, A. J. (3299) 



ORGANIC FOOD RESERVES IN RELATION TO THE ERADICATION OF CANADA 



thistles. Ohio Agr. Expt. Sta. Bull. 441, 25 pp., illus. 1929. 



Wenger, P. A. (3300) 



Canada thistle in idaho. Idaho Agr. Col. Ext. Bull. 39, 8 pp., illus. 1920. 



WlLLARD, C. J. (3301) 



AN EASIER WAY TO KILL QUACK GRASS AND CANADA THISTLES. Ohio Agr. 



Expt. Sta. Bi-monthly Bull. 139: 121-125. 1929. 



Woodman, R. M., and Jones, W. A. (3302) 



the eradication of weeds by chemicals. Chem. News 144: 21-27. 1932. 



Woods, C. D. (3303) 



notes on the angora goat. Maine Agr. Expt. Sta. Bull. 98: 193-198, 

 illus. 1903. 



Woods, M. E. (3304) 



eradicating noxious weeds by grazing. Natl. Wool Grower 8(7): 13-15, 

 illus. 1918. 



See also Amy ($451), Ayres and others (852), Barnes (5088), Coe (197), 

 Crandall (241), Fleming and others (5096), Georgia (143), Hanson (2892), 

 HiUman (856), Johnson (413), Judd (2753), Medley (1171), Nelson (5101), 

 Pammel (1181, 5102, 5104, 5105), Pollock (899), Sampson and others (1257), 

 Smiley (446), Stiles (5107), Swingle and others (293), Thornton and others 

 (295), United States Department of Agriculture (186), and Wooton (346). 



MECHANICAL IMPROVEMENTS 



Publications treating in a general way of all mechanical or artificial improve- 

 ments on western grazing lands; descriptions, methods of location, and con- 

 struction of these improvements; and specific articles on a particular kind of 

 improvement which cannot properly be located elsewhere. 



Foster, W. A., and Stephenson. R. S. (3306) 



beef cattle equipment. Iowa Agr. Expt. Sta. Circ. 75, 31 pp., illus. 1922. 



Gehrs, J. H. (3307) 



livestock and farm mechanics. Rev. ed., 393 pp. illus. New York. 

 1932. 



Hultz, F. S. (3308) 



livestock equipment for Wyoming. Wyo. Farm Bull. 2, no. 3, 30 pp., 



illus. 1923. 



La Motte, A. (3309) 



blasters' handbook describing practical methods of using explosives 



for various purposes. Ed. 8, 264 pp., illus. Wilmington, Del. 1934. 



Lindsley, E. A. (3310) 



CREOSOTED LUMBER IN CONNECTION WITH THE FARM AND RANCH. Amer. 



Wood Preservers' Assoc. Proc. 17: 185-188. 1921. 

 United States Department of Agriculture, Bureau of Animal Industry. 



(3311) 

 concrete construction on the livestock farm. U. S. Dept. Agr. Farmers' 

 Bull. 481, rev., 32 pp., illus. 1922. 



Youngblood, B. (3312) 



barns for work animals. Tex. Agr. Expt. Sta. Bull. 210, 28 pp., illus. 

 1917. 



See also Potter and others (4800). 



