486 EXPERIMENT STATION RECORD. 



types, tractors and cable systems, are described and illustrated and their 

 methods of operation discnssed. 



Preliminary tests of new dairy machinery, U. Maktiny t.\rb. Drut. Lundw. 

 (Jesell., No. 259 (1914), pp. 69, figs. 18). — A large number of different dairy 

 implements are described and illustrated, and preliminary tests of the systems 

 as to the manner and efficiency of their operation are reiK)rted. 



The distribution of the overhead electrical discharge employed in recent 

 agricultural experiments, I. Jorgenskn and J. II. Pkikstlky (Jour. Agr. .SW. 

 \ Ell (J I and], 6 {I9L',), No. 3. pp. SS7-:i>,8. fif/s. S).— In studios of conditions 

 requiring certain modifications in the methods to be employed in subsequent 

 field exi)eriments it was found that the strength of the discharge from an over- 

 head wire network at a high iK)tential is a variable quantity depending on the 

 mobility of the carriers of the electricity and on the velocity of the wind. 



Measurements of potential gradient and of current density agreed in showing 

 that the effect of the discharge is not limited to the area under the wires, which 

 is of importance owing to the fact that control and electrified areas have 

 usually been placed close together in field experiments. In this connection an 

 account is given of the distribution of the discharge under various weather con- 

 ditions. Methods are discussed by which the control area may be kept under 

 more normal electrical conditions in spite of the proximity of the overhead 

 discharge wires, and the results of more or less unsuccessful experiments in 

 this direction in which a plat was entirely inclosed by a wire cage of ^-in. 

 mesh netting 6 ft. high are discussed. 



Farm storages for fruits and vegetables, E. Smith (Brit. Columbia Dept. 

 Agr. Bui. 58 (1914), pp. 27, figs. iS).— This bulletin deals with storages for 

 fruits and vegetables. 



The two main tyi^s dealt with are those using some means of lowering the 

 temperature below that of the outside air and those dei>ending upon tempera- 

 tures secured from atmospheric changes. The first class is subdivided into 

 those using mechanical refrigeration and those using ice as a refrigerant. The 

 desirable points taken from many designs investigated are summarized in 

 diagrammatic illustrations which are intended for complete and modern cold 

 storage and packing houses. 



It is stated that with a basement storage better ventilation is had by placing 

 the building at right angles to the prevailing winds, and if the storage is above 

 ground the building should run north and south. For vegetable storage the 

 cheai>est equipment to supply is said to be the pit or trench, in which may be 

 stored such crops as the potato, cabbage, celery, carrot, beet, and other root 

 crops. Good drainage is essential for a storage pit of this kind, and this may 

 usually be found on a slope having a loose or gravelly subsoil. 



Bills of material are given for different types of storage structures and spe- 

 cial information is given for storage houses for celery and onions. 



The geology of the county of Jervois, and of portions of the counties of 

 Buxton and York, with special reference to underground water supplies, 

 R. L. Jack (Geol. Survey So. Atist. Bui. 3 (191.'f), pp. 47, pis. 6, figs. 4).— This 

 report describes and discusses the topography and geology of the county of 

 Jervois and portions of the county of York, with special reference to the occur- 

 rence and distribution of surface and underground water supplies. A geological 

 chart of the area is appended. 



Lowering of the ground-water table, W. A. Cook (Tran^. Earn. Acad. Sci., 

 26 (1913). pp. 8Jf-86). — The drying up of creeks, ponds, rivers, surface springs, 

 and wells in eastern Kansas is attributed by the author to the lowering of the 

 gi'ouud-water table in that part of the State. It is stated that stockmen, farm- 



