then drop a few grains of neutral carbonate of ammonia
into a glass of it, and a few drops of phosphate of soda. If magnesia
be present, it will fall to the bottom.

Test for Iron in Water.--1. Boil a little nutgall and add to the
water. If it turns gray or slate, black iron is present. 2. Dissolve
a little prussiate of potash, and, if iron is present, it will turn
blue.

Test for Lime in Water.--Into a glass of water put two drops of oxalic
acid and blow upon it. If it gets milky, lime is present.

Test for Acid in Water.--Take a piece of litmus paper. If it turns
red, there must be acid. If it precipitates on adding lime water, it
is carbonic acid. If a blue sugar paper is turned red, it is a mineral
acid.

Value of Manufactured Steel.--A pound of very fine steel wire to make
watch springs of, is worth about $4; this will make 17,000 springs,
worth $7,000.

Horses in Norway have a very sensible way of taking their food, which
perhaps might be beneficially followed here. They have a bucket of
water put down beside their allowance of hay. It is interesting to
see with what relish they take a sip of the one and a mouthful of
the other alternately, sometimes only moistening their mouths, as
a rational being would do while eating a dinner of such dry food. A
broken-winded horse is scarcely ever seen in Norway, and the
question is if the mode of feeding has not something to do with the
preservation of the animal's respiratory organs.

The Process of Fastening Rubber Rolls on Clothes Wringer.--1. Clean
shaft thoroughly between the shoulders or washers, where the rubber goes
on, 2. Give the shaft a coat of copal varnish, between the shoulders,
and let it dry. 3. Give shaft coat of varnish and wind shaft tightly as
possible with five-ply jute twine at once, while varnish is green, and
let it dry for about six hours. 4. Give shaft over the twine a coat of
rubber cement, and let it dry for about six hours. 5. Give shaft over
the twine a second coat of rubber cement, and let it dry for about six
hours. 6. Remove washer on the short end of shaft, also the cogwheel if
the shaft has cogs on both ends. 7. See that the rubber rolls are always
longer than the space between the washers where the rubber goes on, as
they shrink or take up a little in putting on the shaft. 8. Clean out
the hole or inside of roll with benzine, using a small brush or swab. 9.
Put the thimble or pointer on the end of shaft that the washer has been
rem