28 1 MULLER, C. — Kritische Untersuchungen iiber den Nach- 



weis maskirten Eisens in der Pflanze und den 



angeblichen Eisengehalt des Kaliumhydroxyds. 



Ber. Deut. Bot. Gesell., (1893), Bd. 11, S. 252. 

 Thinks Molisch's views lame. 



287 MULLER, H.— tjber Krankheiten der Reben und deren 

 Bekampfung. 



Der Weinbau 8 Jahrg., (1882), S. 176-177. 



Centbl. Agr. Chem„ Bd. 12, S. 630. 



For Peronospora use wash of S. of I. one part, water" two parts. 



283 MUNRO, J. M. H.— Potassium Chloride as a Plant 



Poison. Essential Elements of Plants. 



Chem. News, Vol. LIII, (1886), p. 2. 



Ferrous superphosphate, in effect a mixture of calcium sulphate, 

 monocalcic phosphate and ferrous sulphate (12%), far from poi- 

 soning the plants, proved to be a good manure, and gave one of 

 the best crops. (Potatoes.) 



284 NAGELI, C. — Die Ernahrung der niederen Pilze durch 



Mineralstoffe. 



Sitzber. K. Bayer. Akd. Wiss. Math. Phys. Kl. Bd. X, (1880), 

 S. 340. 



Claims iron to be unnecessary element, but publishes nothing to 

 substantiate claim. 



285 NARBONNE, P. — La chlorose de la vigne preservation 



et traitement. 



Notice of this brochure in Jour. Agr. Prat., (1888), T. II, p. 188. 

 Used 50 kgo. S. of I. to 100 1. water. 



286 NESSLER, J. — Einfluss der Starke verschiedener Losun- 



gen auf dass Keimen der Samen und das Wach- 

 sen der jungen Pflanzen und iiber die Starke 

 der Losung, welche bei gegebener Dungung, im 

 feuchten Boden und bei Regen ensteht. 



Wochenbl. landw. Ver. Grossherzogthum Baden (1877), No. 6, 

 S. 41-43. 



Centbl. Agr. Chem., Bd. II, (1877), S. 125. 



Pot experiments with plants shielded from rain but not from 

 sunlight showed injurious action of S. of I. when the soil con- 

 tained 0.25 gr. to 1700 litres soil. 



Plants in a darkened room in moist soil containing 2 gr. S. of 

 I. to 1700 1. soil, were not injured; on the contrary, the growth 

 was benefitted. It was observed that the more S. of I. the soil 

 contained, the better the plant growth. Plants 2-5 ctm. high were 

 killed by the application of a 1.5-2.0% solution of S. of I. A 

 .05% solution of S. of I. was found harmful to germination. 



