THE IERIGATION AGE. 



119 



WHEAT. 



The Agricultural Experiment Station of New 

 Mexico has recently issued a bulletin on "Wheat 

 Growing Under Irrigation," which gives the results 

 carried on during the last ten years. Interested 

 parties may secure this bulletin by addressing the 

 Director of the Experiment Station with a request 

 for bulletin No. 84. 



The average yield of wheat in New Mexico is 

 23 bushels per acre ; the average yield in England is 

 30 bushels and in the United States is but 13. The 

 yield in New Mexico can be materially increased by 

 better cultural methods and the use of better seed. 



It costs about $24.50 to grow an acre of wheat 

 in the Mesilla Valley. This is, however, under irri- 

 gation where the yield is much above that of the 

 average of the state (23) as given above. The aver- 

 age yield for 24 varieties for 10 years on the Sta- 

 tion farm is 45 bushels. This yield, with wheat at 

 $1.00 per bushel, gives a good return above the cost 

 of growing. 



Use good, clean seed. The Station has had the 

 best results with Rodi and Hedgerow varieties, but 

 all of the varieties tested have done well. Only one 

 averaged below 37 bushels. 



Prepare the seed bed carefully so as to reduce 

 the clods and secure a fine tilth. 



Use about a bushel and a half (90 Ibs.) of seed 

 per acre and put it on as evenly as possible. 



Give the seed the formalin treatment for smut. 

 This is cheap and effective and will not injure the 

 vitality of the seed. The Station has a press bulle- 

 tin on this subject which will be furnished on re- 

 quest. 



Sow winter wheat early in September. Sow 

 spring wheat any time from October to the last of 

 February. Scarcity of irrigation water may limit 

 the time to early spring. 



Letters of inquiry are given careful attention. 

 E. P. Humbert, Station Agronomist, New Mexico 

 College of Agriculture and Mechanic Arts. 



THE "RAILROAD RED BOOK.' 



A comprehensive as well as conservative review 

 of the agricultural, mining, industrial and commer- 

 cial conditions, as they exist in the states of Colo- 

 rado, Utah and New Mexico, is contained in the 

 annual review number of the "Railroad Red Book," 

 just issued by the passenger department of the 

 Denver & Rio Grande Railroad. Governor Ammons 

 of Colorado and Governor Spry of Utah have con- 

 tributed instructive articles on the 1912 progress 

 of their respective states. Mr. C. J. Blanchard, 

 statistician of the United States Reclamation Serv- 

 ice, writes on irrigation projects. The presidents 

 of the Colorado and Utah agricultural colleges have 

 made valuable contributions on the agricultural 

 resources of the Rocky Mountain region. Mr. D. 

 ^V. Working, of the Agricultural Department at 

 Washington, writes interestingly on farm manage- 

 ment. 



The value of the principal products of Colo- 

 rado is as follows: Agricultural, $79,905,580; live 

 stock, $34,321,000; mining, $69,136,710, and manu- 

 facturing, $145,524,621. The mineral output of 

 Utah, exclusive of coal, amounted to $45,454,977. 



READY NOW: THE PRIMER OF HYDRAULICS. 



By Frederick A. Smith, C. E., Hydraulic Engineer. 



This new book is a splendid volume of over 200 pages 

 of absolutely new matter pertaining to the subject of 

 Hydraulics and its allied branches. All the subjects 

 treated of are handled in a simple and practical way to 

 make them of use to the men who have been unable to 

 obtain a college education, but who are successful practi- 

 cal men in fields where they require a knowledge of the 

 principles of Hydraulics and instructions how to solve 

 their problems in a simple and satisfactory way. This 

 book is indispensable for anyone engaged in works re- 

 lating to Hydraulics, Irrigation or Drainage; it is primarily 

 designed for the practical man in the field, but will be 

 equally welcome to the trained Hydraulic Municipal and 

 Railroad Engineer especially, on account of the many 

 valuable tables compiled by the author, which will save a 

 tremendous amount of time in computations. 

 Condensed Table of Contents. 



General Properties of Matter. 



Algebraic Principles. 



Geometrical Principles. 



Trigonometry. 



Mensuration of Plane Figures. 



Mensuration of Solids. 



The Principles of Mechanical Forces. 



The Three States of Matter. 



General Hydraulic Principles. 



The Coefficient of Roughness. 



How to calculate . 



Explanation of the "C" Tables. 



Open Channels Problems. 



Closed Channels Problems. 



Pipes Flowing Full Under Pressure. 



Loss of Head by Enlargement of Channel. 



Subdivisions of Channels. 



Loss of Head at Entrance to Pipes. 



Ditches. 



Ditch Tables and Their Applications. 



Flow Measurements. 



The Use of Logarithms. 



Tables. 



Fourteen tables giving the factor C for all cases of chan- 

 nels for a coefficient of roughness ; n varying from 

 .008 to .050, inclusive, for channels having a hydraulic 

 radius from .01 ft. to 900.0 and for slopes varying from 

 0.1 to .000025, thus practically covering every possible 

 condition. 



Tables of square roots of numbers used for r and s. 

 Table of Hydraulic Elements of the Circle. 

 Table of Hydraulic Elements of Composite Section. 

 Table of Areas and Circumferences of Circles. 

 Table of Hydraulic Equivalents. 



Table of Weights of a Cubic Foot of Various Substances. 

 Conversion Table of United States and Metric Measures 



and Weights. 



Table of Squares, Cubes, Square Roots and Cube Roots. 

 Table of Logarithms. 

 Table of Natural Sines and Cosines. 

 Table of Natural Tangents and Cotangents. 

 Conversion Toble, millions of gallons in 24 hours in other 



units. 



Table of sizes of pipes or cylindrical conduits required for 

 the flow of given quantities of water at given veloc- 

 ities. 



Most all of these tables have been originated and 

 computed by the author and have been checked in prac- 

 tical work and found to be correct, so that the tables alone 

 will be worth many times the cost of the book. 



The price of the book has been placed as low as is 

 consistent with the superior quality of the work and it 

 may be obtained on the following terms : $2.50 a single 

 copy, cloth bound ; if order is sent with a new subscrip- 

 tion to IRRIGATION AGE or a renewal subscription, the book 

 will be sent and THE IRRIGATION AGE one year for the sum 

 of $3.00. 



Postage is included in the above prices. 

 Send in your orders early, so as to receive early 

 attention. 



Send all orders and remittances to 

 Irrigation Age, 30 N. Dearborn St., Chicago. 



