Creosote is Creosote, 

 but^ 



WE sell crude commercial creosote — millions of gallons 

 of it — but we only recommend it for use in the Pressure 

 Process. Green lumber or timber cannot be effectively 

 creosoted by non-pressure processes. They should be air-dry. 

 The OPEN-TANK SYSTEM and the BRUSH METHOD 

 require a refined coal-tar creosote. The physical characteristics 

 of the commercial creosotes make them unfit for practical use 

 in these treatments. 



Refinement consists of chilling the crude creosotes, solidifying 

 the naphthalene and removing it, draining off the remaining 

 liquid, and distilling it to rigid specifications drawn to meet 

 the special requirements of the Brush Method and Open-Tank 

 System; obtaining an oil 



Bruth Method 



liquid at low temperature, 

 penetrating the wood easily, 

 of high preservative value, 

 and positively permanent — 

 i. e., practically non-volatile. 

 For the protection of con- 

 sumers against the misuse 

 of the phrase "refined cre- 

 osote," we have named our 

 refined creosote "Carbosota 

 — Grade-One Liquid Creosote 

 OiV 



CARBOSOTA, however, is simply a pure coal- 

 tar creosote oil, refined for the piarpose, con- 

 forming to standard specifications, and not a 

 proprietary product or a patented compound. 



The National Lumber 

 Manufacturers' Association, 

 in their Farm Bulletin, No. 

 3, state the following: 



"Proprietary or patented 

 preservatives consisting of 

 chemical solutions or mix- 

 tures of various kinds have 

 been extensively sold. Some 

 of them, particularly those 

 containing creosote, have a 

 high value as preservatives. 

 Others are practically worthless despite ex- 

 travagant claims. The high cost is the worst 

 drawback to patented preservatives of merit. 

 They are rarely superior to good creosote and 

 often not as good, and their cost is often out 

 of proportion to their relative value." 



The United States Department of Agriculture, 

 in Bulletin No. 744, says: 



"It [coal-tar creosote] is considered one of the 

 most eflScient preservatives against decay so 

 far developed." 



COAL-TAR CREOSOTE has been used for 

 the preservation of wood from decay for nearly 

 four-score years." 



Send for interesting booklet, "Long Life for 

 Wood." Address our nearest office. 



The 



Compdiiy 



Open Tank — Uireci tieaiing. 

 (Courtesy U. S. Forestry Service.) 



The Patterson Manufacturing Company, Limited 

 Montreal Toronto Winnipeg Vancouver 



St. John, N. B. HaUfax, N. S. Sydney, N. S. 



