322 RAULIN, T. — Etudes chimique sur la vegetation. 



Ann. Sci. Nat. Bot., 5 Ser. T. II, (1869), p. 224. 



323 REICH, E. — Uber Hederichsvertilgungs-Versuche. 



Thatigkeitber. d. Versuchst. f. Pflanzenkultur in Dresden, (1902). 

 Jahresber. Agr. Chem. Bd. 46, S. 247. 



Centbl. Agr. Chem. Bd. 32, S. 679. 



The weed is killed by the solution and by the powdered salt. 

 For a hectare use 666 1. of 15% solution, 200-400 1. of 25% 

 solution. 



324 REISCH, E. — Uber Hederich vertilgungs Versuche. 



Fiihling's Landw. Ztg. Bd. 41, (1903), S. 89. 



Experimented with powdered S. of I. alone and mixtures of 

 S. of I. with sugar, dextrine and ashes, and with following 

 results : 

 Action of powdered S. of I Very good. 



" " S. of I. plus sugar Good. 



" " " " " " dextrine Medium. 



"" "" " ashes Very good. 



The action of a 15% solution was good. 



325 RHODIN, S. — (Trials with copperas for eradication of 



moss in old meadows and lawns.) 



K. Landtbr. Akad. Handl. och Tidskr 30, (1891), S. 139. 

 E. S. R. 4, 963. 

 Results undecided. 



326 RICHARDS, H. M.— Die Beeinflussung des Wachsthums 



einiger Pilze durch chemische Reize. 



Jahrb. Wiss. Bot., (Pringsheim), Bd., 30, (1897), S. 674. 



327 RIEHM, ( ). — Unkrautvertilgung durch Chemikalien. 



Deut. Landw. Presse, (1901), No. 48, S. 430. 



328 ROBIN, A. B.— Diseased Cherry Trees. 



Gard. and Field (Adelaide), Vol. XVII, (1892), pp. 182-183. 



For treatment of Monilia fructigena a solution of S. of I. in form 

 of a spray is recommended. 



329 ROMMETIN, ( ). — Installation pour le sulfatage des 



cereales. 



Jour. Agr. Prat., (1899), T. I., p. 651. 



