50 WOOD TURPENTINE. 



our short experience we should say that they would crack or check in time. In the! 

 case where turpentine paints are used that is, coach colors where varnish is applied 

 afterwards we notice that they change the color. We do not advocate the use oi 

 wood turpentine. 



In the foregoing opinions there is perfect agreement as to the 

 objectionable odor of wood turpentine, although it would appear 

 from some of the statements that some samples differ but little from 

 gum turpentine in this property, a fact which is confirmed by the 

 experience and observation of this bureau. As a rule the manu- 

 facturers of paints and varnishes state that properly prepared wood 

 turpentine is fully as satisfactory as ordinary turpentine, drying as 

 well and working as well as gum spirits. 



Dealers are generally of the opinion that it is of practically the 

 same value as gum spirits as a diluent, but find that the odor seri- 

 ously interferes with the sale of the material. 



Manufacturers state that they have no difficulty in disposing of 

 their entire product to paint and varnish makers, and at a price close 

 to that of gum spirits. 



There is considerable difference of opinion among the users of 

 paints and varnishes, piano makers, carriage and motor builders, 

 furniture makers, railroad companies, shipbuilders, and house painters. 

 Thus a prominent builder of automobiles states that then' painters 

 know very little about it, but that it is very quick drying and evapo- 

 rates so rapidly from the paint that it is left lifeless. They have 

 never been able to get satisfactory results with it. Another com- 

 pany states that it could not be used indoors on account of the 

 odor. A piano company states that it curdles or precipitates the 

 varnish and has an offensive odor. A shipbuilding company finds 

 that it works as well and appears to give the same results as ordinary 

 turpentine, and the only objection is its unpleasant odor. A rail- 

 road company finds it satisfactory as a paint diluent, but objects to 

 its odor. 



It would appear that the material differences in the expressed 

 opinions as to the drying properties and suitability in general as a 

 paint and varnish thinner are due in large part at least to the well 

 known lack of uniformity in wood turpentines as heretofore placed on 

 the market. It is more than probable that in those cases where 

 decided objection is raised the turpentine contained considerable 

 percentage of pine oils, which not only affect drying properties, but 

 greatly increase the objectionable odor. 



CONCLUSIONS. 

 POSSIBLE PRODUCTION FROM W T ASTE MATERIAL. 



The waste wood of the South and Northwest from the lumber in- 

 dustry tops, stumps, slabs, and sawdust, and the dead and down 

 timber from fires and storms furnishes one of the great undeveloped 



