When the soup appears to be too thin or too weak, the cover of the boiler should be taken off, and the contents allowed to boil till some of the watery parts have evaporated; or some of the thickening materials, above mentioned, should be added.

The principal thing to be acquainted with is the fact, that, in proportion as the syrup is longer boiled, its water will become evaporated, and its consistency will be thicker.

The appellation of marmalade is applied to those confitures which are composed of the firmer fruits, as pineapples or the rinds of oranges; whereas jams are made of the more juicy berries, such as strawberries, raspberries, currants, mulberries, &c. Fruit pastes are a kind of marmalades, consisting of the pulp of fruits, first evaporated to a proper consistency, and afterwards boiled with sugar.

"DEAR GALT,Though I shall always retain a lively general recollection of my agreeable interview with Lord Byron, at Genoa, in May, 1823, so long a time has since elapsed that much of the aroma of the pleasure has evaporated, and I can but recall generalities.

Letter by letter the milk evaporated, leaving the sheet perfectly clean and white except for the ink-written message.

of water evaporated by 1 lb. of coal, and this may be taken as the performance of common land boilers at the present time.

Q.Will this rule give the proper dimensions of the pump for feeding the boiler with water? A.No; it is necessary in practice that the feed pump should be able to supply the boiler with a much larger quantity of water than what is indicated by these proportions, from the risk of leaks, priming, or other disarrangements, and the feed pump is usually made capable of raising 3-1/2 times the water evaporated by the boiler.

About 16 cubic feet of water should be evaporated by a locomotive boiler for each, square foot of fire grate, which, with the proportion of heating surface already mentioned, leaves 5 square feet of heating surface to evaporate a cubic foot of water in the hour.

This is only about half the amount of surface usual in land and marine boilers per cubic foot evaporated, and its small amount is due altogether to the high temperature of the furnace, which, by the rapidity of transmission it causes, is tantamount to an additional amount of heating surface.

Q.But is it certain that a cubic foot of water evaporated in the hour is equivalent to an actual horse power? A.An actual horse power as fixed by Watt is 33,000 lbs.

Thus, in a 40 horse engine working without expansion, Watt found that .674 feet of water were evaporated from the boiler per minute, which is just a cubic foot per horse power per hour; but it is not certain in this case that the nominal and actual power were precisely identical.

this the proportion of steam room adopted in locomotive boilers? A.No; in locomotive boilers the proportion of steam room per cubic foot of water evaporated is considerably less even than this.

It does not usually exceed 1/5 of a cubic foot per cubic foot of water evaporated; and with clean water, with a steam dome a few feet high set on the barrel of the boiler, or with a perforated pipe stretching from end to end of the barrel, and with the steam room divided about equally between the barrel and the fire box, very little priming is found to occur even with this small proportion of total steam room.

It thus becomes easy to tell the volume and pressure of steam required, which steam in its turn represents its equivalent of water which is to be evaporated from the boiler, and the boiler must be so proportioned, by the rules already given, as to evaporate this water freely.

Mr. Watt's practice was to allow about a wine pint (28.9 cubic inches) of injection water, for every cubic inch of water evaporated from the boiler.

This, it will be remarked, is the theoretical area required per actual horse power; but as the friction and contractions in the pipe further reduce the discharge, the area is made 1/15th of a square inch per actual horse power, or rather per cubic foot of water evaporated from the boiler.

For while Hermstadt swallowed a grain of nicotianin with impunity, the vapor of pure nicotin is so irritating that it is difficult to breathe in a room in which a single drop has been evaporated.

By repeated fermentations in preparing snuff, much of the nicotin is evaporated and lost.

Every vestige of the composure so laboriously acquired at Madam Winterbottom's salon had evaporated.

The change was doubtless effective, and was skilfully made; yet one cannot help feeling that some of the magic of the poem has evaporated in the process.

It happened, however, that one night recently the perfect programme was givenCarnaval, Les Sylphides and Petroushka; but there was not a seat in the house, and I therefore had to stand in great discomfort, so that half the joy evaporated.

Heat very slowly to boiling, skim, keep covered, and simmer until tender and the water evaporated; add salt, turn the pieces, and brown them in their own juices.

Salt had to be evaporated from sea water and this was a slow process.

The total liquid, amounting to more than 600 c.c., was evaporated on a water-bath, commencing with the weaker portions, so that the stronger ones might be exposed to the heat for the shortest time, until reduced to about 20 c.c.

A second and third portion of ether, each of 50 c.c., were used in the same way, and the whole evaporated to dryness in the capsule.