BIRDSFOOT TREFOIL AND BIG TREFOIL 13 



LITERATURE CITED 



(1) Britton, X. L. 



1901. MANUAL OF THE FLORA OF THE NORTHERN STATES AND CANADA. 



1080 pp. New York. 



(2) Levy, E. Bruce. 



1918. the birdsfoot trefoils. New Zeal. Journ. Agr. 17: 347-351, 

 illus. 



(3) Maine Agricultural Experiment Station. 



1890. experiments with forage plants. Maine Agr. Expt. Si a. Ann. 



Rpt. 1889: 161-171. 



(4) Massachusetts Agricultural Experiment Station. 



1891. EXPERIMENTS WITH FIELD AND GARDEN CROPS. MaSS. Agr. Expt. 



Sta. Ann. Rpt. 1890: 169-186, illus. 



(5) Monteith, John, Jr., and Hollowell, E. A. 



1929. pathological symptoms in legumes caused by the potato 



leafhopper. Jour. Agr. Res. 38: 649-677, illus. 



(6) Nelson, J. C. 



1917. THE INTRODUCTION OF FOREIGN WEEDS IN BALLAST AS ILLUSTRATED 

 BY BALLAST-PLANTS AT LINNTON, OREGON. Torreva 17: 151-160. 



(7) Robinson, D. H. 



1934. birdsfoot trefoil in agriculture. Empire Jour. Expt. Agr. 2: 

 274-283. 



(8) Silow, R. A. 



1930. self-fertility of lotus spp. Welsh Plant Breeding Sta., Aberyst- 



wyth [Bui.], ser. H., 12: 234-240. 



(9) Smith, Jared G. 



1900. FODDER AND FORAGE PLANTS EXCLUSIVE OF THE GRASSES. U. S. 



Dept. Agr., Div. Agrostol. Bui. 2, 86 pp., illus. [Revised.] 

 (10) Turner, J. H. 



1933. the viability of seeds. Kew Rov. Bot. Gard. Bui. Misc. Inform. 

 1933:257-269. 



