RESULTS OF ATLANTIC CITY TESTS 129 



inspectors that panels of all formulas which were tinted either 

 gray or yellow were showing far superior wear and less chalking 

 and checking than those which were painted in plain white. 

 The reinforcing action of the tinting materials must be credited 

 for this lengthening of the wear of such paints. Formulas 5, 

 6, 9, and 16, for instance, in the gray, were in most excellent 

 condition, and in these formulas were used ochre, umber, bone- 

 black, carbon-black, Venetian red and other inert bases. On 

 the yellow panels, formulas 5, 6, 9, and 16 were also in very 

 superior condition, and in these formulas chrome yellow and 

 inert pigments were also used. 



Some of the color tests included the priming of boards with 

 white lead, zinc oxide, sublimed white lead, lithopone, and other 

 single pigment paints. Over these priming coats was placed a 

 high grade brilliant paranitraniline red. Fairly good results 

 were obtained in every case, but especially when lithopone or 

 zinc oxide was used as a priming base. These pigments seemed 

 to have no effect upon the constitution of the para red. 



Prussian blue, a colored pigment largely used, but one liable 

 to react with certain paint pigments, was admixed with various 

 paints applied to certain panels. This color was found in some 

 cases to have faded materially, especially when mixed with alka- 

 line pigments such as white lead. Sublimed white lead and zinc 

 oxide, which are more inert in nature, did not have such action 

 on Prussian blue, and the tinted bases of these pigments stood 

 up in a remarkable manner. The greens which were tested 

 were all in very good condition, with absence of fading, and 

 showing only slight mildew. 



Condensed Results of Inspection. The results of inspection 

 as obtained by the fence committee 1 having in charge the in- 

 spection of the test, have been condensed into table form, and 

 are presented on pages 130-131. 



Second Annual Inspection of the Atlantic City Test Fence. 

 After the original paints which had been applied to the Atlantic 

 City Fence had been exposed for over two years, another inspec- 

 tion was made by a committee representing the Master Painters' 

 Association of Philadelphia and the Scientific Section of the 



1 R. S. Perry, Director Scientific Section, Paint Manufacturers' Associa- 

 tion of the U. S. ; George Butler, Official Painter, representing Master House 

 Painters' & Decorators' Association, H. A. Gardner, Asst. Director. 



