190 SCIENTIFIC AND TECHNICAL EDUCATION 



4. Angles. 



5. Time. 



6. Velocity, including angular velocity. 



7. Acceleration, including angular acceleration. 



8. Mass: under this head I would teach measurement of 

 weight and density. 



9. Force. 



10. Intensity of force, including the pressure of gases and 

 fluids. 



11. Work and energy. 



12. Power. 



13. Friction. Solid on solid; fluid on solid, and fluids in 

 themselves. 



14. Strength of materials in various forms, including their 

 elasticity and distortion. 



15. The efficiency of gearing. 



16. The efficiency of motors. 



17. The flow of fluids. 



In addition to the above subjects for measurement, the 

 engineer requires to know how physical measurements are made 

 in heat, optics, electricity, and magnetism. The measurement 

 classes in each of these subjects would embrace a range even 

 exceeding that sketched out above for applied mechanics. 



There are, I am glad to say, laboratories in this country 

 where the student can learn many of the measurements of which 

 1 have spoken. It almost seems to me as if, of all the subjects 

 spoken of, the fundamental measurements in engineering had 

 been most neglected. The object of this paper will have been 

 attained if it in any degree leads to an increase in the opportu- 

 nities given to students of studying that which is surely the 

 basis of all exact science as well as all practice, namely, measure- 

 ment. 



