S.I THi: PRESIDENT OF THE R.I.B.A. 



conditions would not have been complied with, and Mr. 

 Boyle would have been called upon to remove his appli- 

 ances, and the system would have been pronounced a failure, 

 one of the principal conditions being that down-draughts 

 should be entirely absent, and that a continuous and power- 

 ful up-draught should be maintained. 



After six months' practical experience, Mr. Horace 

 Jones, City Architect, and President of the Royal 

 Institute of British Architects, certified that all the 

 conditions had been fulfilled, and that the ventilation was 

 successful ; and Mr. Boyle received payment of his 

 account. A large number of distinguished scientists, 

 representatives from the different Government depart- 

 ments, and scientific and learned societies, repeatedly 

 tested the system during the six months the experi- 

 ments lasted, and they unanimously expressed their 

 satisfaction with the results. Even ventilating en- 

 gineers, who were invited to be present on such 

 occasions, expressed their approval, the success of the 

 system being so evident as to place it quite beyond 

 cavil. 



While these experiments were being conducted, Mr. Boyle 

 received letters from their Royal Highnesses the Dukes of 

 Edinburgh and Connaught and the late lamented Prince 

 Leopold, expressing their interest in his efforts to advance 



