THE IKRIGATION AGE. 



373 



Let us compare the cost of operating this tractor 

 both on gasoline and kerosene. As a matter of fact it 

 will burn gasoline equally as well as kerosene. We will 

 assume that the first cost of the engine is $1,700 and 

 that cheap kerosene costs 5 cents per gallon in barrel 

 lots and gasoline costs 12 cents. First taking gasoline 

 as a fuel, the cost of one day's operation is determined 

 as follows: 



30 gallons gasoline at 12 cents $ 3.60 



l l /i gallons lubricating oil at 20 cents 30 



Labor Engineer at $3.00, helper at $1.50 4.50 



Board of men at 57 cents each 1.14 



Interest on investment at 6 per cent, assuming 200 



working days per year 51 



Depreciation at 10 per cent, assuming 200 working 



days per year 85 



Place and Officers Selected for the Twentieth Congress 



1912. 



Salt Lake City, Utah. 



Francis G. Newlands, Reno, Xev President 



R. W. Young, Salt Lake City, Utah Ch. Ex. Corn. 



Arthur Hooker, Spokane, Wash Secretary 



Congress Address, Salt Lake City, Utah. 



Total cost of one day's work $10.90 



Now comparing this with kerosene as fuel the cost 

 of one day's operation is as follows: 



30 gallons kerosene at 5 cents $1.50 



\ l / 2 gallons lubricating oil at 20 cents 30 



Labor Engineer at $3.00, helper at $1.50. .......... 4.50 



Board of men at 57 cents each 1.14 



Interest on investment at 6 per cent, assuming 200 



working days per year . .51 



Depreciation at 10 per cent, assuming 200 working 



days per year 85 



Total cost of one day's work $ 8.80 



Assuming that the tractor is plowing and that 15 



AN ARTISTIC NEW ROOFING. 



Of recent years unusual attention has been given to 

 the development of special material for the perfection, 

 protection and decoration of modern building construc- 

 tions,^ with special reference to composition roofing. 



Nobody who is buying ready roofing from time to 

 time has any business to be ignorant of the fact that 

 there is a very large and rapidly increasing demand for 

 roofing that has the appearance of a shingle roof, but oh 

 the other hand, one that is fire resisting, artistic and 

 durable. 



The Heppes Company of Chicago, 111., are manufac- 

 turing an Asphalt Shingle that is 8 inches wide and 12^-4 

 inches long, made in three colors, red, greenish gray 



Rumely Oil-.'ull Tractor (15-30 h. p.), Hauling Five Plows and Roller. 



acres are plowed in one day the cost of plowing with 

 gasoline would be 72.6 cents per acre and in the case of 

 kerosene it would be 58.6 cents per acre. This means a 

 difference of 14 cents per acre in favor of kerosene. 



Looking at it in another way the cost of one day's 

 operation is $2.10 less with kerosene than it is with 

 gasoline. The tractor will be used approximately 200 

 days per year. That means that when it is using kero- 

 sene the saving effected in one year is $420. 



(Continued from page 365.) 

 Eighteenth Congress 1910. 



September 26-30. 

 Pueblo, Colo. 



B. A. Fowler, Phoenix, Ariz President 



R. Insinger, Spokane, Wash Ch. Bd. Gov. 



Arthur Hooker, Spokane, Wash Secretary 



Nineteenth Congress 1911. 



December 5-9. 



Chicago, 111. 



B. A. Fowler, Phoenix, Ariz President 



R. Insinger, Spokane, Wash Ch. Bd. Gov. 



Arthur Hooker, Spokane, Wash Secretary 



A House Covered by Heppes Asphalt Shingles. 



and brown. The surface is natural colored chip slate. 

 It does not fade or wear off. They are made to last as 

 long as the house. It only takes 420 of these Flex-a-Tile 

 Shingles to cover 100 square feet. They are easily and 

 quickly laid, and can be applied on the old roof boards 

 of a shingle roof. They are applied the same as wood 

 shingles 4 inches to the weather. They are applicable 

 to any sipping roof on which wood shingles, slate or tin 

 can be used. They never require painting. 



The Heppes Company also manufacture what is 

 known as Flex-a-Tile Roofing in the same colors and 

 finishes as the Flex-a-Tile Shingles, only in rolls con- 

 taining 108 square feet. Flex-a-Tile roll roofing is now 

 being specified for use as a siding as well as a roofing. 

 The application with suitable wooden panel strips is very 

 effective, and lowers the cost of building without sacri- 

 ficing durability and wearing qualities. A Red Flex-a- 

 Tile Shingle roof with a Green Flex-a-Tile siding and 

 white panel strips is extremely attractive for residences 

 of all kinds. 



Both of these items ought to appeal to the home 

 builder, and full information can be had by applying to 

 The Heppes Company at Chicago, 111. 



Send $1.00 for 1 year's subscription to the IRRIGA- 

 TION AGE and bound copy of THE PRIMER OF IRRIGA- 

 TION. If you desire a copy of THE PRIMER OF HY- 

 DRAULICS add $2.50 to above price. 



