436 



dynamometers, and other appliances necessary to its work. Nnmerons pieces of 

 machinery have been devised to aid in rendering all tests purely mechanical and 

 automatic, and thus to eliminate the personal equation. Tests are made as lar as 

 possible under conditions similar to those in actual practice. Both the force which 

 an implement requires for its use and that which it exerts are measured. The working 

 of separate parts of machines is studied with a view to determining where the defects, 

 if any, in construction are to be found. A detailed report of the tests in each case i. 

 made to the maker of the implement. A moderate fee is charged for the examinations. 

 QuEEXSLAND.-BulletinNo. 11 of the Department of Agriculture, issued Septem- 

 ber, 1891, contains "suggestions for buQding a cool dairy," illastrated with plans of 

 the building described. 



