292 EXPERIMENT STATION" EECORD. 



power is transferred by chain drive to differentials on both rear and front 

 axles. 



It is claimed that this tractor is very economical in fuel consumption and is 

 able to operate under conditions impossible for the use of the ordinary tractor. 



Trials with liquid manure spreaders, M. Dall and C. L. Feilberg {Tldsskr. 

 Landokonomi, 1912, No. 7, pp. JM-433, fif^s. i2).— Trials with 18 different 

 sprinkling carts are described, and the strong and weak points of each machine 

 are discussed. 



The trials of corn and seed drills, 1912, C. P. Hall {Jour. Roy. Agr. Soc. 

 England, 73 {1912), pp. 358-365, figs. 4).— The drills were tested in 2 classes: 

 Class 1, drills for corn and pulse, and class 2, drills for grass and clover, coulter 

 and broadcast. 



Eight machines were entered in the first-class trials and thoroughly tested 

 for ease and accuracy of adjustment, even distribution of seed, adaptability to 

 various seeds, weight, simplicity of construction, combined with strength, num- 

 ber of attendants, general efficiency, and price. A 13-row and a 12-row corn 

 and seed drill, both of the same manufacture, were awarded first and second 

 honors, respectively. 



Only one machine, which was of the same make as the winners of the first- 

 class trials, was entered in the second-class trial. It effected such satisfactory 

 drilling by rows and by broadcasting that it was given first honors, regardless 

 of the absence of competition. 



In these trials recent improvements of the various parts apparently displayed 

 no great advantages. The disk type of coulter was classed as no improvement, 

 and the old-fashioned cup feed demonstrated its superiority over all new types. 

 The results in general indicate that the machines tested are far from perfect, 

 and it is stated that a comparison of results obtained in these trials with simi- 

 lar trials held in 1874 shows little improvement and practically no alteration. 



Grain cleaning contest {Canad. Thresherman and Farmer, 18 {1913), No. 8, 

 pp. 39, 40, figs. 4). — Three types of grain cleaners were entered in these tests, 

 including 8 machines, 6 of them hand driven and 2 power driven. Wheat, oats, 

 barley, flax, and timothy w&re used in the tests. 



Considering power acquired, capacity, design and construction, and efficiency, 

 the highest score attained out of a possible score of 500 points was 391 points 

 for the hand-driven machines and 411 points for the power-driven machines. 

 Out of a total of 175 points on efficiency, including percentage of waste grain 

 and grain grading, the same machines attained the highest score of 135 points 

 for the hand machine and 132 points for the power machine. 



Test of a feed-grinding- and sifting" mill, J. Rezek {Mitt. Landw. Lehrkanz. 

 K. K. Hochsch. Bodcnkul. Wien, 1 {1913), No. 4, pp. 558-589, pi. 1). — ^A brief 

 description of the mill and its adjustable parts is followed by the results of 

 tests. 



The mill was driven by an electric motor. Barley containing 12.39 per cent 

 moisture and weighing 70.9 kg. per hectoliter (about 55 lbs. per bushel) was 

 ground to a fine meal at the rate of 246.3 kg. per hour, the speed being 581 

 r. p. m., and the necessary horsepower 3.13 Oats containing 11.88 per cent 

 moisture and weighing 51 kg. per hectoliter was-s ground at the rate of 310 kg. 

 per hour, the speed being 614 r. p. m., and the necessary horsepower 1.45. Corn 

 containing 14,39 per cent moisture and weighing 75,8 kg. per hectoliter was 

 ground into 3 sizes by 3 dift^erent adjustments, the first yielding coarse meal at 

 the rate of 527.7 kg, per hour, the second a* somewhat finer meal at the rate of 

 365.4 kg, per hour, and the third a very fine meal at the rate of 197,1 kg. per 

 hour, at respective speeds of 618 r. p. m., 614 r. p. m., and 602 r. p. m., and 

 respective necessary horsepowers of 1,05, 2.6, and 2.15. 



