AGRICULTURAL ENGINEERING. 295 



soned. The effect of hot-air treatment in dry kilns was studied, and 

 contrary to common opinion the results show that it has no detri- 

 mental effect. Different processes which apply high temperature and 

 pressure to increase durability and strength of wood were investigated, 

 and it was found that the claims as to effective chemical changes were 

 unfounded, and as to strength the effect was either negative or injurious. 

 The effect of immersion of timber as influencing its strength beyond 

 the simple moisture effect was tested, and so far as the results go it was 

 proved that the material was practically unaffected by immersion for 

 periods of as much as <> months' duration. 



Clearing land, F. A. Huntley ( Washington Sta. Bui. 28, pp. 17, 

 Jigs. 4). — An account is given of the methods pursued and the results 

 obtained in the clearing of a tract of land for experimental purposes 

 at the Puyallup Substation. 



"No standing timber excepting a limited amount of young or second growth 

 occupied the ground when the clearing was begun. Logs were in great abundance. 

 but were of little or no value by reason of knotty growths or partial decay. The 

 original fonst consisted very largely of fir on the dry clay soil ami cedar in the moist 

 locations. There were a limited number of stumps of ash, maple, and alder, but 

 these being of the deciduous class were found advanced in decay, and were easily 

 taken out. The scanty second growth of alder and shrubbery added nothing of 

 importance to general expenses." 



The most troublesome problem connected with this work was the 

 removal of the stumps, and blasting was adopted as the most prac- 

 tical means of accomplishing this, giant powder and Judson powder 

 being the explosives used. A detailed description is given of the tools 

 employed and the methods used in laying the blasts. The average 

 expense per stump was a little less than 77 cts. The average cost per 

 acre of clearing was $101.71. 



Irrigation in South Dakota; plat work with forage crops, etc., J. H. Shepard 

 and E. C. Chilcutt | South Dakota Sta. Bui. 52, pp. /-.•/, 31, 82, pis. T). — A discussion 

 on irrigation in South Dakota and a report on experiments conducted to determine 

 the effect of artesian well water upon vegetation. Forty plats of various forage 

 crops were irrigated, and the results seemed to show that the water and its salts are 

 beneficial. An analysis of the water is given. 



The application of wind as motive power, P. La Con: | Ugeskr. Landm., 41 ( 1S9G), 

 pp. 424-42G). 



Trials of agricultural machinery conducted at the eighteenth general Swedish 

 agricultural fair at Malmo, 1896, S. Rhodin (Bedogbrelse for den sarskilda redskap- 

 spriifinngen till 18da Alhndnva Svenska Landtbruksmotet i Malmo. Lund. 1S9G, pp. 207, 

 Jigs. S3). 



Tests of American double and single plows, E. Bokelmaxx | Tidsskr. Landokon., 

 15 i!S9G), pp. 513-547). 



Cold storage for farm products, G. L. Clkmexci: (Jgr. Massachusetts, 189G, pp. 

 226-236). — A popular article on cold storage on the farm and the construction and 

 management of cold-storage houses for farmers' uses. 



Silos and silage, E. ('. Chu.cott (South Dakota Sta. Bui. 51, pp. 20-32, figs. 3). — 

 A popular article on the use of silos, the ways to build them, and their cost. The 

 construction of the station silo is described in detail. Several figures are given to 

 explain details of construction. 



