SUPPLEMENTARY OBSERVATIONS 



CONCERNING 



CHIMNEY FIREPLACES. 



OBSERVATIONS CONCERNING OPEN CHIMNEY FIRE- 

 PLACES. 



An Account of various Faults that have been committed by 

 Workmen, in England, who have been employed in altering 

 Chimney Fireplaces, and fitting them up according to the 

 Method recommended by the Author, in his Fourth Essay. 



Consequences which have resulted from these Mistakes. 



Necessity of adhering strictly, and without Deviation, to 

 the Directions which have been given. Those Particulars 

 are pointed out in which Workmen are most liable to fail. 



I WAS much flattered on my return to England, in 

 September, 1798, after an absence of two years, to 

 find that the improvements in the construction of chim- 

 ney fireplaces, which I had recommended in my Fourth 

 Essay, published in London in the beginning of the 

 year 1796, were coming into use in various parts of the 

 country; and I have since taken a good deal of pains 

 to find out how they have answered, and what faults 

 and imperfections have been discovered in them. And 

 as the information I have obtained by these inquiries 

 has enabled me to make several remarks and observa- 



