38 



WOOD TURPENTINE. 



The percentage of volatile matter distilled from the varnishes ii 

 shown in the following table: 



Percentage of volatile matter distilled from the various varnishes. 



Perhaps the only point worthy of attention here is the large amoun 1 

 of volatile matter contained in the first coach varnish thinned witl 

 gum spirits. This is the varnish that has the highest viscosity anc 

 required the greatest amount of thinning. 



The color of all the varnishes was determined, using the Lovibonc 

 colorimeter. Readings were made in the J-inch cell. All varnishe* 

 were found to have the same amount of yellow, the only variatior 

 being in the red readings. 



Color determinations on varnishes thinned in 



ivays (Lovibond readings}. 



No useful conclusion can be drawn from the color tests. The date 

 furnished by the various experimenters are brought together ir. 

 Table 11. 



COMMENTS OF THOSE WHO TESTED THE VARNISHES. 



Murphy Varnish Co.: We have reached the conclusion that the coach and plane 

 finishing varnishes have been mixed. If it is so, our tests, so far as drying and rubbing 

 properties are concerned, are valueless. Generally speaking, we are of the opinion 

 that the samples you sent us are poor varnishes; poor as to materials and poor as tc 

 methods of manufacture. 



A. B. Chase Co.: In our opinion these varnishes (piano) were prepared and thinne( 

 with a turpentine substitute. When these varnishes were polished they did not come 

 up to our expectation, so we concluded they were gloss varnishes and simply gave 

 the panels another coat and left them with a gloss finish. 



The James & Meyer Buggy Co.: As far as we can judge without giving them on< 

 year's test in the open weather, No. 1 and No. 3 turpentines could be used by us aboul 

 the same as regular turpentine. No. 2 and No. 4 could not be used at all, as the] 

 crawl apart under the brush. 



