IOWA ACADEMY OF SCIENCE 121 



being done at present by architects and engineers who do not specialize 

 along this line; yet even the above brief discussion shows that the solu- 

 tion of the larger problems requires knowledge and skill beyond those 

 possessed by the average architect and engineer; and therefore the 

 profess-ion of illuminating engineering has come into existance. The 

 field of the illuminating engineer is the design of illuminating systems 

 which will satisfy the user from both the utilitarian and aesthetic 

 standpoints and at the same time be practical from the financial stand- 

 point. 



The rapid growth of the profession is shown by the membership of 

 the Illuminating Engineering Society, which is only five years old, 

 being 1530; of which 61% are engaged in supplying electrical eneregy, 

 21.3% in supplying illuminating gas, 5.4% in the making of fixtures 

 and globes, 4.7% in teaching, .8% are architects and .3% are illuminat- 

 ing engineers, leaving an unclassified remainder of 6.5%. The mem- 

 bers of the society have held 35 technical meetings during the past 

 year. 



The general interest in illuminating problems is shown by the fact 

 that there is a monthly magazine, of no mean proportions, which is 

 devoted exclusively to the field of illumination and both the gas and 

 electrical engineering magazines devote considerable space to this field. 



