87 
ought to sell for £71. Hence the profit is not only in 
favour of the producer, but very much so on the side of the 
consumer; for it will at once be perceived that he is pur- 
chasing in milk for £33 an amount of nutritive constituents 
for which, in meat, he would have to give £71. Hence it is 
evident that the humbler classes would derive incalculable 
benefit from a more extensive use of this valuable ingre- 
dient. It is, however, very much to be regretted that, in the 
rural districts, a small quantity only comes to their hands ; 
farmers will scarcely give themselves the trouble to produce 
more milk than is required for their own domestic use, and 
the labourer is left to acquire a depraved taste for a decoc- 
tion of one of the most useless productions imported into this 
country, namely, tea, I trust, however, that when they 
become more awake to the advantages which may be derived 
from a more extensive production of milk, and when railways 
enable them to distribute it uniformly to all parts of the 
kingdom, that they, with the liberality and philanthropy 
which has always distinguished them as a race, will give 
this boon to the class who are mainly dependent on their 
exertions. 
ON IVORY, AS AN ARTICLE OF MANUFACTURE. BY GEORGE 
DALTON, ESQ., OF SHEFFIELD. 
Ivory, the substance of the elephant's tusk, is a material 
with the appearance of which most persons are familiar. 
But few, perhaps, are aware that there are many varieties 
of this substance, differing materially from each other 
in composition, durability, and external appearance, and 
likewise in value; that they are differently affected by 
time, heat, and the atmosphere. It will, therefore, be the 
object of this paper to describe those differences. 
The principal sources from whence our supply of ivory is 
