ENGINEERS' LICENSE LAWS 257 



must be accompanied by a fee of $2, and that for a boiler or 

 water tender's license, by a fee of $1. 



According to the ordinance, an applicant for an engineer's 

 license shall be a machinist or engineer, having a practice of 

 at least 2 yr. in the management, operation, or construction 

 of steam engines and boilers, and an applicant for a boiler ten- 

 der's license shall be a person who has a thorough "knowledge 

 of the construction, management, and operation of steam 

 boilers. Each engineer and boiler or water tender so to be 

 licensed shall be at least 21 yr. of age and of good character, 

 all of which shall be vouched for in writing by at least two 

 citizens of Denver, or shall be verified under oath by the appli- 

 cant when required by the board of examiners. 



All such licenses may be renewed from year to year upon 

 payment of the license fee before specified and without further 

 examination, unless the applicant applies for a different class 

 or grade of license. 



Engineers in charge of locomotives and engineers or boiler 

 or water tenders in charge of boilers carrying a steam presssure 

 of not more than 10 Ib. per sq. in. are exempt from the pro- 

 visions of the ordinance. 



Detroit, Mich. In Detroit the city boiler inspector examines 

 candidates as to their fitness to perform the duties of the 

 stationary engineer. Any person claiming to be qualified to 

 operate a boiler must apply in writing on blanks provided for 

 the purpose for a license. The inspector shall examine him 

 and consider the proof offered in support of his claims. If the 

 inspector is satisfied that the applicant's knowledge, experience, 

 and character render him competent to handle boilers with 

 safety, he shall issue a license certificate to that effect, design- 

 ating the class in which the engineer is authorized to operate. 



There shall be three grades of engineers' license. First- 

 class engineers' licenses shall be unlimited as to the number 

 of boilers and pressure, and shall be granted to any citizen 

 having an experience of 5 yr. in the care of steam boilers, pro- 

 vided he can pass a satisfactory examination. Second-class 

 licenses shall be limited to 75 H. P. and shall be granted to 

 any citizen having an experience of 3 yr. in the care of steam 

 boilers, provided he can pass a satisfactory examination. 



