XX SOCIETE MYGOLOGIQUfi. 



Stahel (G.)- — De Zuid-Amerikaansche Hevea Bladziekte. 



Stakmann (E.-C), Parker (J.-H.) et Piemeisel (F.-J.). — Can 

 biological forms of stemrust on wheat change rapid'ly enough to 

 interfère with breeding for rust résistance ? 



Stakmann, Piemeisel, Levine. — Plasticity of biologie forms of 

 Puccinia graminis. 



Stbrnon (F.). — Une Maladie nouvelle du Dahlia. 



Stevens et Dalbey (N.). — New or noteworthy Poi'to-Riean 

 Fungi. 1 



Tisdale(W.-H.). — Phjsoderma disease of corn. 



True et Geise . — Experiments on the value of greensand as a 

 source of potassium for plant culture. 



True, Black and Kelly. — Ash absorption by spinach from 

 concentrated sbil solutions. 



Tyôzalurô Tanaka. — New Japanese fungi. 



Warrex (G. -H.). — Water Systems for farm homes . 



Weir(J.-R.). — Conçerning the introduction into the United 

 States of extra-Limital Wood-destroying Fungi. 



Le Gérant : L. Declume. 



