76 GRATITUDE OF THE OFFICIALS. 



guarantee success. Mr. Taylor accepted Mr. Boyle's offer 

 with an expression of incredulity, and said if he was 

 prepared to subscribe to such a guarantee, to be drawn up 

 by himself (Mr. Taylor), he would there and then adopt the 

 plan and estimate as furnished. Mr. Boyle signifying his 

 assent, the matter was settled, and the work proceeded. 

 The result is now a matter of world- wide celebrity in the 

 annals of sanitary engineering history, and has earned for 

 Robert Boyle's son the reputation of being the most skilful 

 ventilating engineer in this or indeed any country. On the 

 completion of the work it was submitted to a series of severe 

 tests, under most trying conditions, by a number of gentlemen 

 interested in the subject, including eminent scientists, 

 engineers, architects, and medical men, who expressed them- 

 selves completely satisfied with the results. This opinion, 

 after a sufficient trial of the system, was endorsed by Her 

 Majesty's Board of Works and by the occupants of the 

 room, who in the warmest manner expressed their gratitude 

 to Mr. Boyle for the great benefit he had conferred upon 

 them. With a view to put on record the evidences of 

 success, we give a few extracts from journals of the 

 period : 



" The advantages of Messrs. Boyle's system have been 

 rendered obvious to the most superficial observer. The 

 atmosphere of the room is now clear and pure, and the old 



