824 WEED FLORA OF IOWA 



Laws. 7. Weeds of Special Crops. 8. Poisonous "Weeds. 9. Table 

 of Noxious Weeds. 10. Migration of Weeds. 11. Extermination 

 of Weeds. 12. Treatment for Special Weeds. 13. Morphology of 

 Weeds. 14. Descriptions of Some Common Weeds. 15. Partial 

 Bibliography, Consisting of Easily Accessible References, Ar- 

 ranged by Harriette S. Kellogg. This lists the important papers 

 on the subject. 



A little treatise, "A Talk on Weeds," an address given before 

 the County Road School, Clinton County, 1910, gives an account 

 of a few of the important weeds and notes for the teacher. A 

 somewhat similar paper especially adapted for schools was pub- 

 lished by Miss Caroline Forgrave of Dallas county. This little 

 paper gives suggestions of what school children may do to study 

 weeds. Both of these were written by Mr. Pammel. 



Bulletin 70 of the Iowa Agricultural Experiment Station, by 

 the same writer, discusses a few of the more important Iowa weeds 

 with an account of the dissemination of seeds and the pollination of 

 a few plants; subsequently Mr. Pammel and Miss King published 

 an extensive bulletin on the treatment of weeds, especially with 

 iron sulphate. 



Prof. H. L. Bolley also published an extensive treatise on "Weeds 

 of North Dakota," particularly with reference to the treatment 

 with iron sulphate. 



Attention may also be called to a little semi-occasional publica- 

 tion by the American Steel and Wire Company on "Weeds," par- 

 ticularly on treatment with iron sulphate. This little journal is 

 well illustrated. Many of the nature study works like those of 

 Hodge, Stevens, Birkett and Hall, Goff and Mayne, such as 

 "Weeds," "Farm Friends and Farm Foes," as well as the Agri- 

 cultural botany of John Percival, give short accounts of weeds. 



W. S. Blatchley, in the "Indiana Weed Book," 1912, describes 

 one hundred and fifty common weedy plants ; including an account 

 of their nature and habits, as well as suggestions for eradication. 

 Of the weeds considered, it is interesting to note that seventy- 

 seven are natives of Indiana, while seventy-three are introduced 

 species. 



Of the more important treatises on weeds the recent bulletin by 

 J. W. Beal, who was formerly botanist of the Michigan Agricul- 

 tural College should be mentioned. This book of 167 pages de- 

 scribes and figures the important weeds of Michigan. This is a 

 most helpful treatise, and with the excellent figures one will be 



