pieces.

7. The cost of this purification is covered sufficiently by the above
advantages, and besides this, the method is cheaper and surer than any
other.

The chemical factory, Eisenbuettel, furnishes pure carbonate of soda in
single packages, which exactly correspond with the quantity, stated by
the analysis, of ten cubic meters of a certain water. The determination
of the quantities of lime and carbonate of soda necessary for a certain
kind of water, after sending in a sample, will be done without extra
charge.--_Neue Zeitung fur Ruebenzucker Industrie_.

* * * * *




EDDYSTONE LIGHTHOUSE.


The exterior work on the new Eddystone Lighthouse is about two thirds
done. In the latter part of April fifty-three courses of granite
masonry, rising to the height of seventy feet above high water, had been
laid, and thirty-six courses remained to be set. The old lighthouse had
been already overtopped. As the work advances toward completion the
question arises: What shall be done with John Smeaton's famous tower,
which has done such admirable service for 120 years? One proposition is
to take it down to the level of the top of the solid portion, and
leave the rest as a perpetual memorial of the great work which Smeaton