792 EXPERIMENT STATION" EECORD. 



given of motor plows and ground breakers in general, describing some special 

 Improved types, including combinations of motor and high-speed rotating ground 

 breakers and presenting a graphical discussion of the losses in the di'ive wheel 

 by slipping and sinking and special improved types of drive-wheel rim to 

 prevent this. 



The application of motor plows, E. Fkeund (Wiener Landw. Ztg., 62 {1912), 

 1^0. 1/5, pp. 51/3, 544) ■ — A description and discussion are given of three systems of 

 motor plowing, namely, the rope and windlass system, the drag system, and the 

 combination tractor and ground-breaker system, giving tables showing the 

 horsepowei', revolutions per minute, weight, fuel, required, cost of 'operation, 

 and initial cost of the different makes of each system. 



[A powerful ditching machine] (La. Planter, J,8 (1912), No. 19, p. S36, fig. 

 1). — A powerful ditching engine is described which pulls a bull ditcher back 

 and forth between the main canals of an irrigation system, thus making a 

 system of connecting ditches between the main canals. It is claimed that ther 

 ditcher can be operated at a speed of 3,000 ft. per hour. 



A new machine for picking cotton (Texas Farm Co-operator, 35 (1912), 

 No. 36, p. 1, fig. 1). — ^A description is given of a new cotton picker, the mecha- 

 nism of which consists of a 16-iu. cylinder 12 in. long, on which are mounted 20 

 opindle-shaft frames each carrying 7 spindles, making 140 picking fingers in all. 

 As the cylinder revolves, the spindles are caused to revolve at high speed as 

 they stand in a vertical position and the cotton wraps around them. When 

 they come to a horizontal position they are thrown out of gear and the cotton 

 is stripped off and passed to a basket in the rear. It is claimed that this picker 

 will do the work of from 10 to 12 men, requiring only a team and driver. 



A new fruit-tree sprayer, C. Platz (Mitt. Priif. Stat. Landw. Masch. u. 

 Gerate Halle, 1912, No. 16-'t, p. 2^, figs. 21). — This pamphlet reports the results 

 of investigations on a fruit-tree sprayer, consisting of a pressure cylinder, con- 

 taining compressed air and the liquid to be applied, an air pump to supply the 

 air pressure, a manometer to measure and gage the air pressure, a gage to 

 regulate the supply of the liquid, and a hose with an adjustable spray nozzle, 

 the whole being fitted with the necessary valves. The theory of the operation of 

 this apparatus is explained and the results of pressure measurements, investi- 

 gations of power required in pumping the pressure, time duration of discharge, 

 discharge efficiency, and nozzle efficiency are given. 



The conclusions are that although the apparatus in practice may not be as 

 efficient under all conditions as the investigations show, yet it combines simplic- 

 ity, ease of operation, and relatively high efficiency. 



Milking machines and mechanical milking, C. Huyge (Ann, Oembloux, 

 22 (1912), No. 5, pp. 251-308, figs. 2//). — This article describes several different 

 makes of milking machines operated by suction, compression, and suction and 

 compression combined, and discusses the important principles of their oper- 

 ation and the advantages and disadvantages of mechanical milking in general, 

 pointing out the bad effects that some machines have on the cow, and the 

 advantages of time saving, sanitation, and flexibility of mechanical milking 

 apparatus. 



Preliminary examinations of new dairy apparatus, B. Martin y (Arb. 

 Duet. Landw. GcscU., 1912, No. 219, pp. 101, figs. 4I). — This work describes and 

 gives the results of preliminary investigations of new dairy machinery and 

 apparatus, among which are cream separators, churns, refrigerating machinery, 

 heating apparatus, and aparatus for testing milk and cream. 



Dairy barn at University of Missouri, C. H. Eckles (Wallaees' Farmer, 

 37 (1912), No. 16, j)p. 751, 752, figs. 2).— The ground plan and general descrlp- 



