TOMATO LEAF MOLD 27 



a condition could be avoided by painting the iron with white lead or zinc-free 

 paint. The same protection from the formation of chemical residues harmful to 

 plants can be obtained b\- painting the metal gutters, posts and other overhead 

 metal construction. 



Table 16. — Analyses of Residues of Proprietary White Paints Exposed to 



Fumigation with Burning Sulfur, and Action of Extracts on 



Tomato Foliage 



iDuPont Prepared Paint 40. Outside White 

 Pigment 65%; Vehicle 35% 



White Lead 30% 



(Basic carbonate white lead 52%; basic sulfate white lead 48%) 



Titanium Barium Pigment 38% 



Zinc Oxide 27% 



Silicates 5% 



2Lowe Bros. High Standard House Paint. White 328 

 Pigment 65%,; Vehicle 35% 



Basic Carbonate White Lead 37% 



Basic Sulfate White Lead 13% 



Zinc Oxide 25% 



Titanium Dioxide 12.5% 



Magnesium Silicate 12 .5% 



'John Lucas & Co. Lucas Tinted Gloss Paint. Inside White 



Zinc Oxide 5% 



Titanium Pigment 35% 



Calcium Carbonate 7% 



Linseed Oil 14% 



Varnish 33% 



Diier 1% 



Volatile Thinner 5'/ 



^Norfolk Paint & Varnish Co. T. L. Z. Paste White 



Lead Sulfate 15% 



Titanox A 6% (Titanium dioxide) 



Zinc O.xide 15% 



Titanox B 30% (Barium sulfate 70%; Titanium dioxide 30%) 



Asbestine 20% 



Lead Titanate 14% 



^Boston Varnish Co. Kyanize 600. Outside White 

 Pigment 62%; Vehicle 38% 



Carbonate of Lead 33.3% 



Zinc Oxide 33.3% 



Titanox 33 . 4% 



