THE IRRIGATION AGE. 



833 



(Continued from page 823.) 



To find the side BC by trigonometry proceed as follows : 

 BC/AB sin o then BC = AB sin a; look up the sine of <* 

 = 45 37' = .71488 ; then, BC = 17 X .71433 = 12.153 ft. 



Problem 2. The side AB = 14.73 ft. and angle o = 

 23 16'; find AC and BC. 



Solution. Since a = 23 16', then g 90 23 16' = 

 66 44'; also: AC/U.73 = cos 23 16' = .91868; hence: AC 

 14.73 X -91868 = 13.532 ft.; 5C/14.73 = sin 23 16' = .39501; 

 hence : BC = 14.73 X 39501 = 5.8185. 



Problem 3. Let AC = 13 ft. and BC 20 ft., find the other 

 part of the triangle. 



Solution, tg o = BC/AC 20/13 = 1.53846, look in a 

 table of natural tangents and find that 1.53888 corresponds to 

 56 59' and 1.53791 corresponds to 56 58', so the value of the 

 angle o lies between 56 58' and 56 59', a little nearer to 

 56 59', which will be taken for the answer. 



Angle B = 90 56 59' = 33 1'. 



The side AB is found as follows : 



59' = 



AB = BC/s'm a 



Substitute the values for BC = 20 and sin 56 

 .8385; then AB = 20 -=- .8385 = 

 AB = 23.851 ft. 



(Continued from page 827.) 

 still bore more or less of the spray de- 

 posits, which were difficult to remove, 

 without injuring the delicate bloom. 



Perhaps the most important result of 

 the season's work was to demonstrate 

 the value of fall spraying for this dis- 

 ease. Every plot which received this ap- 

 plication gives evidence of its value and 

 every one of the plots which gave the 

 best results, viz: 4, 5, 10, 13, 22, 24, 26, 

 27, 33 and 34, were fall sprayed either 

 with Bordeaux or lime-sulphur. 



Little can be said as a result of the 

 season's work as to the comparative val- 

 ue of Bordeaux mixture and lime-sul- 

 phur solution for spraying peaches. The 

 Bordeaux seems to have given slightly 

 better results, but the difference is so 

 slight as to be easily within the range of 

 error or normal variation. 



It is usually considered a dangerous 

 practice to use Bordeaux mixture upon 

 peach trees in foliage, but under the con- 

 ditions which have prevailed at Ashland 

 during the past two seasons no injury 

 whatever has resulted from the use of 

 the 3-6-50 formula. This does not argue 

 that injury might not occur under less 

 favorable conditions and growers who 

 plan to use Bordeaux upon their peach 

 trees are urged to exercise care in the 

 preparation of the mixture and also, if 

 possible, to avoid spraying in cold, rainy 

 weather. The more vigorously the trees 

 are growing the less Susceptible will they 

 be to the Bordeaux injury. 



We have conclusively demonstrated 

 during the past three years that lime- 

 sulphur gives better results than does 

 Bordeaux in preventing apple scab, and 

 that by its use the danger of spray in- 

 jury may be eliminated. It was hoped 

 that similar results might follow its use 

 upon the peach. Eventually such may be 

 the case, but from the single season's 

 work all that can safely be said is that 

 in all probability stock solutions which 

 test 30 degrees Beaume, if diluted 1 to 

 30 or 35, would not injure foliage and 

 would probably be efficient in checking 

 the disease. 



In this connection the attention of 

 growers is called to the following state- 

 ment of Mr. W. M. Scott, of the U. S. 

 Department of Agriculture, that "The 

 self-boiled lime-sulphur mixture, how- 

 ever, when prepared as a mechanical 

 mixture of lime and sulphur with only 

 a small percentage of the sulphur in so- 

 lution, is not injurious to peach foliage ; 

 and in our experiments for two years 

 past has proved to be a good fungicide." 



Peach fruit spot probably causes a 

 loss to the peach and apricot growers of 

 Oregon greater than that caused by all 

 other peach diseases. 



OWNERS ARE PROUD 

 OF I H C WAGONS 



There is a certain pride in owning a wagon that you 

 know is built of the highest quality materials obtainable 

 a wagon that is not only attractively finished with the 

 best paint and varnish, but which also gives perfect 

 service, day after day, and year after year. That's why 

 I H C owners are so proud of their wagons. If you 

 want to be proud of your next wagon choose any one of these 

 in the I H C line 



Weber 

 'New Bettendorf Steel King 



Weber wagons have been leaders for 66 years. Hickory is 

 used for axles, singletrees, doubletrees, and neckyokes. 

 Oak is used for hubs, hounds, bolsters, reaches, and sand- 

 boards. Oak or hickory is used for spokes. 

 New Bettendorf wagons are the only wagons with tubular 

 steel axles the only wagons with extension reach box- 

 no extra reach is needed to lengthen the gear. Removable 

 malleable sleeves protect the axle and can be replaced 

 when worn. 



Steel King is the only wagon that has a perfect adjust- 

 able Trtake and internal reinforcement of axles and 

 bolster. Wheels and box same high quality as the 

 other I H C wagons. 



Why not see the I H C local dealer now about the wagon 

 you want. Let him tell you about the many features 

 and advantages possessed only by I H C wagons. 

 Let him give you the reasons why I H C wagons 

 are so light running, why they are so strong and 

 why they last so much longer than any other 

 wagon. Also get literature from him, or, 

 write nearest branch house. 



IHC 



Service Bureau 



This Bureau is a 

 clearing: house of 

 agricultural data. 

 It aims to learn 

 the best ways of 

 doing things on 

 the farm, and then 

 distribute the in- 

 formation. Your 

 individual experi- 

 ence may help 

 others. Send your 



Froblems to the 

 H C Service 

 Bureau. 



WESTERN BRANCH HOUSESr-Denver, Colo.; Helena. 

 Mont.; Portland, Ore.; Spokane, Wash.; Salt Lake City, 

 Utah; San Francisco, Cal. 



International Harvester Company 

 of America 



(Incorporated) 



Chicago USA 



