ENGINEERS' LICENSE LAWS . 245 



"No person shall have charge of or operate a steam boiler 

 or engine in this commonwealth, except boilers and engines 

 upon locomotives, motor road- vehicles, boilers in private resi- 

 dences, boilers in apartment houses of less than five flats, 

 boilers under the jurisdiction of the United States, boilers for 

 agricultural purposes exclusively, boilers of less than 9 H. P., 

 and boilers used for heating purposes exclusively, which are 

 provided with a device approved by the chief of the district 

 police limiting the pressure carried to 15 Ib. per sq. in., unless. 

 he holds a license as hereinafter provided." 



A steam boiler or engine may not be operated for more than 

 1 wk., unless the person in charge of and operating it is duly 

 licensed. 



"Section 80. The words have charge or in charge, used in the 

 foregoing section, shall designate the person under whose 

 supervision a boiler or engine is operated. The person oper- 

 ating shall be understood to mean any and all persons who 

 are actually engaged in generating steam in a power boiler." 

 This section of the Massachusetts laws has been amended so- 

 as to include a designation of the terms operator, operated, or 

 'operating, where used in the law, as applying to any person 

 who, under the supervision of the licensed person in charge,, 

 operates any appurtenances of a boiler or engine, provided 

 that there is not more than one such person employed for every 

 licensed person, and that any such operating must be in the 

 presence of and under the personal supervision of the latter 

 person. 



Section 81 provides that whoever desires to act as engineer 

 or fireman shall apply for a license therefor to the state inspc-c- 

 tor of boilers for the city or town in which he resides. The 

 application blanks are to be obtained from the boiler-inspection 

 department of the district police. 



To be eligible for a first-class fireman's license, a person 

 must have been employed as a steam engineer or fireman in 

 charge of or operating boilers for not less than 1 yr., or he 

 must have held and used a second-class fireman's license for 

 not less than 6 mo. To be eligible for examination for a 

 third-class engineer's license, a person must have been employed 

 as a steam engineer or fireman in charge of or operating boilers- 



