46 



NEW ENGLAND FARMER. 



•works wirh jeluctance and discouragement. We 

 have not taken into consideration the icear and tear of 

 conscience, and its final effects on character, in making 

 flimsy excuses, delaying what might be accom- 

 plished. 



M.vNUFAcrciiE OF Glass. — A correspondent of the 

 Christian Mirror gives the following account of the 

 manufacture of tumhlcrs : — 



As the manufacture of the pressed glass tumblers 

 may not have been witnessed by many of yoiu- read- 

 ers, I will describe it in a fe;v words. In the first 

 place, they have a brass mould, consisting of a solid 

 mass, about as hu-gc over as a half-peck measure, 

 containing a hollow in it, exactly in the form of the 

 tumbler to be made, with a follower of brass, of the 

 same form, but so much smaller as to fit the inside 

 of the tumbler. When the two parts of the mould 

 are put together, the space between them is the 

 exact thickness of the vessel required. 



In the process of manufacturing, throe men and 

 two boys are required. The first thing done, is for 

 one of the men to dip an iron rod in the melting 

 glass, and move it about till he has a sufficient quan- 

 tity of the fluid mass on the end of his rod ; he then 

 holds it over the hollow of the mould, and with a 

 pair of shears ciits off what he judges to be just 

 enough to constitute the tumbler. Instantly the 

 other man brings do-\\"n t?ie follower with level pow- 

 er, and the melted glass is so compressed as to fill 

 the cavity of the mould. He then turns his mould 

 bottom up, with a little blow, and the tumbler drops 

 red hot uj^on a stone table. One of the boys, with 

 an iron rod having a little melted glass on its end, 

 presses it on the bottom of the tumbler, and it slight- 

 ly adheres. He then holds it in the mouth of a 

 glowing furnace, turning it rapidly, till it is almost 

 in a melting state, -when the third man takes it, and, 

 whirling the rod and tumbler on a sort of arm of a 

 chair, he holds a smooth iron tool against the edge 

 of the tumbler till all the roughness is removed from 

 its edges, when a boy takes the rod from him, and 

 by a slight stroke to the end of it, drops the tumbler, 

 and places it in a hot oven, to cool gradually. These 

 five hands will make a beautiful tumbler in about 

 forty seconds, or about one hundred iu an hour. 



To piioDUCE Till: Exact Likentss of any Object 

 INSTANTLY ON Pafeu,. — Tliis may be readily effected 

 by layiTig the paper on a table and holding a double 

 convex lens (a common sun-glass) over it, and then 

 placing a mirror over the lens, in an oblique position, 

 80 as to face partly towards the object that is to be 

 represented. The rays of light, passing from the 

 object to the mirror, will be reflected downward 

 through the lens, and produce the likeness of the 

 object in full colors on the paper. This experiment 

 may easily be made in the evening, by reflecting the 

 flame of the candle in this same manner, which %\ill 

 appeal- very brilliant on paper. Eut in order to ren- 

 der the rcilection of an object distinctly visible by 

 daylight, it may be requisite to exclude nearly all 

 the light from the paper, except what fivlls through 

 the lens. In all cases, the lens must be placed at a 

 distance above the paper, according to its focus, at 

 the distance at v/liieh it would contract the rays of 

 the sun to the smallest point. 



FxiiK AND V^ATER- Proof Cement. — To half a pint 

 of milk put an equal (quantity of vinegar, in order 

 to curdle it ; then separate the curd from the Avhey, 

 and mix the whey Avith fonr or five eggs, beating the 



whole well together. When it is well mixed, add a 

 little quicklime through a sieve, until it has acquired 

 the consistence of thick paste. With this cement, 

 broken vessels and cracks of all kinds may be mended. 

 It dries quickly, and resists the action of water, as 

 well as of a considerable degree of fire. 



A Cement for stopping the Fissures of Iron 

 Vessels. — Take two ounces of muriate of ammonia, 

 one ounce of flowers of sulphur, and sixteen ounces 

 of cast-iron filings or turnings ; mix them well in a 

 mortar, and keep the powder dry. When the cement 

 is wanted, take one ])art of this and twenty pai'ts of 

 clean iron filings or borings, grind them together iu 

 a mortar, mix them ■\\ ith waier to a proper consist- 

 ence, and apply them between the joints. 



To prevent Iron from rl-stinu. — Warm your 

 iron till you cannot bear your hand on it without 

 pain to yourself. Then rub it with new and clean 

 white wax. Put it again to the fire till it has soalvcd 

 in the wax. When done, rub it over with a piece 

 of serge. This prevents the iron fi'om rusting after- 

 wards. — A". Y. Far. <^ Meek. 



To STAIN Wood like Eeony. — Take a solution of 

 sulphate of iron, and wash the wood over with it 

 two or three times ; let it dry, and apply two or 

 three coats of a strong decoction of logwood ; wipe 

 the wood when dry with a sponge and v/atcr, and 

 polish with oil. 



GROWING TEA IN THE UNITED STATES. 



By the following paragi-aph, copied from the New 

 York Journal of Commerce, it appears that an ex- 

 periment in the culture of the tea plant in this 

 country is about to be tried imder favorable circum- 

 stances. It is the opinion of many well-informed 

 persons, that it will prove successful. 



The Tea Plant in the United States. — llic 

 planters and farmers of the Southern States Avill be 

 gratified to learn that seven cases of black and green 

 tea plants, Chinese stock, have ju3t arrived ii'om 

 London in the ship American Eagle, shipped by Dr. 

 Junius Smith, during his late vi-.it to that city. 

 There arc five hundred plants, of from live to seven 

 years' growth ; all are designed by the doctor for seed 

 plants. A small quantity of tea-seed was brought out 

 by him in the steamship Eiitannia, which was received 

 in London overland from tlie north-west provinces of 

 India. We understand the doctor designs to pro- 

 ceed soon to the south, with a view of forming a 

 plantation. More plants and seed are expected from 

 India and China this season, and if we may judge 

 fiom the progress ah-eady made, we have now the 

 means in hand of extending tea plantations through- 

 out such sections of our country as may be found 

 adapted to their culture. — Ohio Cultivator. 



SPONTANEOUS COMBUSTION. 



At the City Gas AVorks at Philadelphia, vau'ts had 

 been constructed for the bituminous coal u-od in 

 making the gas, and into which the coal was packed 

 very close for the saving of room. A few weeks since, 

 spontaneous combustion was observed in those vaults ; 

 but it was put out (supposed) with but little trouble. 

 Last Saturday week, however, the fire burst out 

 again, and was not subdued without a great loss of 

 coal, after several hours of unremittii^g toil by the 

 city fire department. — Scientijic American. 



