31 
cause an abundant escape of Sulphuretted Hydrogen. The 
compound of Phosphate of Lime with Sulphurous Acid has 
none of these disadvantages. Acids, as well as Ammonia, are 
neutralized by it. From a sanitary point of view Ammonia 
is particularly objectionable; being a product of putridity, 
it helps to accelerate it, and also serves as a vehicle for dis- 
seminating other products, which, without it, would not be 
volatile, or only so to a less degree. 
The Sulphited Phosphate, when applied to putrid matter, 
will probably do its first service by neutralizing the Ammonia 
present (including compound Ammonias), and also prevent 
its further formation, as the test paper will show. The 
smell will soon cease, or at least be greatly diminished and 
altered, and the mass will be safe for a long time, so that it 
may be removed or dried without danger or inconvenience. 
I must here remark that large quantities of putrid matter 
in open spaces are more completely and speedily disinfected 
by small portions of the Phosphate, than samples in glass 
bottles. The compound recommends itself as a disinfectant 
by its physical properties. It is a clean white powder, 
which stains and soils nothing, dusts off garments or carpets, 
leaving no mark ; it is free from smell and taste, and 
harmless to animal life. 
It proves itself invaluable in stables and shippons. The 
air of these localities is generally highly charged with 
Ammonia, yet the tenants are expected to live and thrive. 
A regular application of a small quantity of the Phosphate 
will prevent the loss of Ammonia, it will sweeten the air, 
and enrich the manure with Phosphoric Acid, thus being of 
threefold advantage. The loss of Ammonia from the dung 
is not inconsiderable, it is also the most valuable constituent 
of it, being worth more than 9d. per lb. to the farmer. 
The solution of Phosphate of Lime in Sulphurous Acid 
also possesses disinfecting powers, and acts in many cases 
even with greater energy than the powder. It might be 
