13d 
side of town, nothing else was done to them; they made their 
growth as usual, only more vigourously, and showed 
abundance of flower buds, — this they had frequently done 
at Smedley, but there they generally nearly all dropped off ; 
this season they dropped none : they are now and have for 
the last three weeks been covered with beautiful blooms, 
and I have no hesitation in saying they have brought to 
maturity more in number than they did in all the eight 
years at Smedley. 
The Chairman stated that he had made experiments many 
years ago on the air of Manchester, and had found a large 
quantity of sulphurous acid, which was frequently converted 
into sulphuric acid. There was also a large quantity of mu- 
riatic acid. These gases were brought down by every drop of 
rain, in sufficient quantity to redden litmus paper. He 
considered that smoke, as well as the gases, was very 
detrimental to both animal and vegetable life. 
“ Remarks on the Nature of Wealth , and on its uses,” by 
J. C. Dyer, Esq. 
It has been said that the term “ Wealth ” is too vague to 
admit of having its sources defined, as attempted in my 
Paper, read at the last meeting of the Society. It may then 
be worth while to explain the sense in which the term is 
therein used, viz. — by the term Wealth I mean to express 
that it consists of and is assumed to include all kinds of 
tangible things that can be sold at a price in the market, 
or for which a certain amount of coin can be had in exchange 
— coin being in itself both wealth and the measure of 
wealth, for when exchanges are by barter they are measured 
by the money value of the things transferred. Wealth is 
composed of things both evanescent and durable, of thosg 
“ fading away ” with the fleeting hours, or lasting for ages ; 
but whilst ministering to real or imaginary wants, to vir- 
tuous or vicious propensities, so long as, and no longer than, 
