Dr MacCulioch on Perfumes for preventing Mouldiness . 33 
of which these waters held the greater part of carbonate of lime 
in solution. It results from this, that the deposits of the 
marshes are rather geological formations than the others \ and, 
in fact, the mineralogical characters which they present, bring 
them much nearer in nature to various mineral beds of the ter- 
tiary formations than any of the former tufas, even of those 
which are the most solid and most ancient. 
It is these waters, charged with calcareous particles in solution^ 
and at the same time with mud simply suspended, which often 
agglutinate on the declivity of mountains the small fragments of 
all kinds detached from the neighbouring rocks. There result 
kinds of breccia or puddingstone, having very little solidity, 
which are pretty commonly found in the high mountains, and of 
which Hungary also presents many examples, especially in the 
counties of Zolyom and Lomor. But no where do these mo- 
dern deposits form in considerable masses, which may perhaps 
be owing to this, that, being always rather soft, they crumble 
down after they have arrived at a certain height. We are so 
much the more induced to form this idea, that we often find 
pretty large detached blocks, more or less broken, on the decli- 
vity of the mountains, or in the bottom of valleys, and that it is 
rare to find, in situ , masses of greater size. One of the best 
points which I know in Hungary for verifying these observa- 
tions, is the route from Neusohe to Henengrund, keeping along 
the declivity of the mountain. 
Art. VI .- — On the Use of Perfumes in preventing the Forma - 
tion of Mouldiness. By John MacCulloch, M. D. and 
E. R. S. &c. Communicated by the Author. 
1 1 ^ 
JL HERE are many cases of daily occurrence, in which the 
growth of those minute vegetables that constitute mouldiness, is 
a very troublesome inconvenience. As your Journal does not 
despise the useful, I need make no apology for a communication 
that has no other quality to recommend it. 
I do not pretend to account for the mode in which perfumes 
act in producing this effect ; nor do I know the limitations with 
respect to these : but I have found it hold good with all the es^ 
VOL. viit. no. 15. jan. 1823. 
c 
