38 



something Las already been done to secure his. The B. A. 

 Ohm was determined in 1862, and since this period improved 

 Ohm-meters have rendered possible the more exact measuring 

 of that amount. 



As to musical pitch, efforts are now being made to settle a 

 universal pitch, and this, when effected, can easily be repre- 

 sented among other standards. 



The possibilities of such a department as Standards Depart- 

 ment of the British Board of Trade are unlimited, and as a 

 power to reduce to order the various systems of the world its 

 importance cannot be over-rated. 



