258 PASTORAL AND AGRICULTURAL BOTANY 



Bulletin 660, 1915; Eradication of Ferns from Pasture Lands in the Eastern United 



States. Farmers' Bulletin 687, 1915. 

 DARLINGTON, WILLIAM: American Weeds and Useful Plants. Second edition, New 



York, Orange Judd & Company, 1859. 

 DEWEY, LYSTER H.: Weeds and How to Kill Them. Farmers' Bulletin 28, 1895. 



Legislation Against Weeds. Bulletin 17, Division of Botany, U. S. Department 



of Agriculture, 1896; Migration of Weeds. Yearbook of the U. S. Department of 



Agriculture, 1896, 263-286. Weeds and How to Kill Them. Farmers' Bulletin 28, 



second revision, 1905. 

 DUVEL, J. W. T. : The Vitality of Buried Seeds. Bulletin 83, Bureau of Plant Industry, 



1905. 

 FERNALD, M. L.: Some Recently Introduced Weeds. Transactions Massachusetts 



Horticultural Society, 1905, Part I, pages 11-22. 



FORSYTE, ALEX: Weeds. Gardeners' Chronicle, new ser., viii, 408, Sept. 29, 1877. 

 GEORGIA, ADA E.: A Manual of Weeds. New York, The MacMillan Company, 1914. 

 GRAY, ASA: Weeds. Gardeners' Chronicle, new ser., xii, 423, 455, Oct. 4, 1879. 

 HANSEN, ALBERT A. : Canada Thistle and Methods of Eradication. Farmers' Bulletin 



1002, 1918. 



HASKELL, S. B.: Vitality of Buried Seed. The Country Gentleman, March 17, 1917. 

 HENKEL, ALICE: Weeds Used in Medicine. Farmers' Bulletin 188, 1904. 

 HILLMAN, 'F. H.: Nevada Weeds. Bulletins 21, 22, 1893, 38, 1897, University of 



Nevada, Agricultural Experiment Station. 



LITERARY DIGEST: A Crop that Makes its Own Weed Killer. May 18, 1918, page 22. 

 PAMMEL, L. H.: Weeds of the Farm and Garden. New York, Orange Judd Company, 



1911. The Weed Flora of Iowa. Bulletin 4, Iowa Geological Survey, 1918. 

 PIPAL, F. J.: Wild Garlic and Its Eradication. Bulletin 176, Purdue University 



Agricultural Experiment Station, 1914. Red Sorrel and Its Control. Bulletin 



197, 1916; Rabbit-proof Plants, List of. The Garden, I, 9, Nov. 25, 1871. 

 SELBY, A. D.: A First Ohio Weed Manual. Bulletin 83, Ohio Agricultural Experiment 



Station, 1897. 

 WILLIS, J. J.: Vitality of Seeds Buried in the Soil (review of the work of W. J. Beal). 



Gardeners' Chronicle, new ser., xxv, 757, June 12, 1886. 

 WOODSTOCK, CHARLES M.: To Eradicate Moss from Grass-land. Gardeners' Chronicle 



& Agricultural Gazette, 1869, 671-72 (June 19). 



Suggestion to Teachers. Teachers should have made collections of a number of 

 the principal weeds and weed seeds, also illustrations of the same for class demonstra- 

 tions. An attempt^ should be made to make an herbarium and set of dried weeds of 

 the local flora, as the weed flora varies in different parts of the world. 



LABORATORY EXERCISES 



1. Describe the dried or fresh specimens of the weeds handed to you making floral 

 diagrams of the flower parts. 



2. Examine the fruits and seeds of a number of leguminous plants with especial 

 reference to the structure, method of dehiscence and arrangement of seeds. 



3. Draw and study in detail the seeds of a few of the above plants, or any good 

 substitutes. 



