OFFICIAL THANKS. 83 



the cause of sanitary science. It may be mentioned that 

 Mr. Boyle's system of ventilation is in use at Claremont, 

 the residence of the late Prince Leopold, and other royal 

 residences. 



The following letters have been received by Mr. Boyle 

 from Sir John Monckton, the Town Clerk of the City of 

 London : 



"Guildhall, B.C., July 10, 1882. 



' ' DEAR SIRS, I gladly give you the enclosed letter of introduction 

 to my friend Mr. Whichcord, and hope that his high professional 

 position may make it of use to you. You have the permission you 

 ask to copy it for use elsewhere, for really I am personally gratefu 

 for the alleviation we now experience in the condition of the air we 

 have to breathe for so many hours together. 

 " Faithfully yours, 



"(Signed) JOHN B. MONCKTON." 



"Guildhall, E.C., July 10, 1882. 



" MY DEAR WHICHCORD,! am asked by Messrs. Boyle to state 

 my personal experience of the recent ventilation of the Council 

 Chamber. I can do so in very few words. Until the present year 

 I never knew what it was to leave the Guildhall on a "Common 

 Council day " without a headache. I now do not know what a 

 headache is. In fact the palpable alteration for the better in the 

 atmosphere, even on crowded days, is very satisfactory, and it 

 appears to me a non-expert that Messrs. Boyle's system is emi- 

 nently valuable and practicable. 



"Yours very obediently, 



"(Signed) JOHN B. MONCKTON." 



In addition, the officials of the Court and many members 



