February. 1915. 



KNOWLEDGE. 



61 



tt # 



Figure 50. Charlock, 

 {Brassica siiiapis.f X 10. 



Figure 51. Hare's Ear. 



(Bupleurum rotitiidifoliiiDi. 



X 10. 



m 



Figure 52. Yellow Rattle, 

 (Rhinanthiis Cristagalli.) X 4. 



Figure 53. Wild Radish, Runch, 

 (RapJumiis raphaiiistniiii.) X 4. 



Figure 54. 0.\-tongue, 

 {Hclminthia echioides.) X 10. 



IK 



> 



Figure 55. Cat-mint, Cat-nip, 

 iNepeta Cataria.) X 10. 



»■, 



» 





*g^-_-^- 





i?,V-: 



Figure 56. White Campion, 

 {Lychnis alba.) X 10. 



99 



Figure 57. Ivj'-leaved Speedwell, 

 {Veronica hederaefolia.) X 4. 



^ ''•^ 





Figure 58. Curled Dock, 

 (Rtiinex crispits.) X 10. 



THE SEEDS OF COMMO.NLV OCCURRING WEEDS. 

 (From ■' Impurities of Agricultural Seed," by S. T. Parkinson and G. Smith. By the courtesy of Messrs. Headley Brothers.) 



