306 PETERMANN, M.— (Treatment of Potato Disease.) 



Jour. Agr. Prat, T. SS, (1891), p. 499- 



Used a mixture of: 



S. of 1 50 kgo. 



Lime 25 " 



Water 25 Hkt. 



307 PETERMANN, A. — Versuche uber die Sterilisation der 



Fakalien. 



Centbl. Agr. Chem., Bd. 27, S. 297. 



A 2% solution of S. of I. does not kill pathogenic organisms. 

 Number colonies of bacteria per c.c.m. after 24 hrs. : 



1% l x /2% 2% solution. 



40074 8555 2756 Colonies. 



308 PETERMAN, A. — Experiences sur les moyens de com- 



battre la maladie de la pomme de terre. 



Bui. Sta. Agron. Gembloux (1891). 



309 PETIT, P. — Influence du fer sur la vegetation de l'orge. 



Compt. Rend. Acad. Sci., (Paris), T. 117, (1893), No. 26, pp. 

 1105-1107. 



Bot. Centbl., Bd. 54, (1894), S. 146. 



Oat plants absorbed ferrous salts and an intensive assimilation 

 of nitrogen resulted. Ferric salts acted as an intense poison. 



310 PETIT, E.— (Anthracnose.) 



Soc. des agriculteurs de France, 6 Juillet, 1889. 



Recommends the employment of a cold saturated solution S. of I. 

 Has incontestably proved its place as a cryptogamic fungicide. 



311 PEYROUX, ( ).— ( .) 



Soc. dAgr. du cantal, (1849). 



S. of I. can replace calcium sulphate to advantage. 



312 PFAUNDLER, L— Notiz iiber Chlorophyll. 



Liebig's Ann. Chem., Bd. 115, S. 37-45- 



313 PFEFFER, W. — Uber Election organischer Nahrstoffe. 



Jahrb. Wis. Bot., (Pringsheim), Bd. 28, S. 230. 



