NOTES AND QUERIES.

Otago Witness, Issue 2861, 13 January 1909, Page 51

NOTES AND QUERIES.

Qn«stiom for reply in coming issut to bt r»etrrad not liter than UOSVKY night. Amaieitr — (1) You cannot by the use of ohemio»l3 convert a photographic print into a pen-and-ink e-keteb. By •manipulation it is possible to make a photograph bear some resemblance to a pen-and-ink sketch. (2) Colour photography is at present in the experimental stage. Various experimenters have no doubt their own secrets, but if -these were printed in the newspapers obviously they would be secrets no longer. K. X.. Waikouaiti. — The specimen forwarded by you wa-8 submitted to Mr G. M Thorneon. P.L.S.. analytical chemist, who reports as follows: — The specimen sent is only quart* somewhat thickly charged with iron pyrites. Whether it is auriferous or not couW only be ascertained on assay. Edison — Thomas Alra Edison, electrician. West Orange, New Jersey. Aqua Fortis, Waikaia. — Mr H. M. Davey. consulting engineer. Princes street, replies: — Probably both are not far from being right, for though there is no doubt that a ram might be made to suck a little, probably a very little, under the circumstances you name, there is no doubt, on the other hand, that you should bring the water to the diaphragm, for that important member has quite enough to do with its little movement without giving it additional work and rendering its action more Uncertain than can bo otherwise 'helped. You give no measurements. Suck from what level? An inch lower, or 20ft. or mor© or less? You see. your question is not- quite the very easiest to find out from it what you really do mean. Lacto aaks where application shouM be made for the position as inspector of dairies. — —If you write to the Chief luepector of Stock, Department of Agriculture. Wellington. «H the information y<su require will be given you. COTTKTHYBIDE. — The following is a method of ma.king cement to unite glass to iron: — Mix into a paste with linseed oil equal I fcarts of litharge, fine dry sand, and plaster j «f Paris, with one-thild of powdeied resin..

It should hs allowed to remain mixed for J three 01 four hours before application, but must be used before ihe expiration of 12 hours. This cement is used foi aqua- | riums. and is, in consequence, generally , known by the name of aquarium cement. j J. C, Pirinoa, writes: — Having tried thej recipe for home-brewed ale, printed iv ■ i Notes and Queries, with splendid success, ' would you kindly print one for making > porter cr stout? Porter is a b'.ack beer ' It requires to be differently manipulated j in the mash-tub- from beer. It is necessary , to have in the mash a mixture of pale ■ ambei and roasted malts m tlie proportion ( requisite to give the desired flavour and I colour, and having achieved this porter j thereafter gees through almost the same process as beer. We have no specific recipe for making porter. • iliNrir asks if there is any other setting 1 of the sons? "Asleep in the deep" besides that of H. W. Petrie. in the key of D. ' The arrangement by H. TV. Petrie is avai!pble in the key of F, but there is no other arrangement of the song by any other composer. A. D , L. F — The temples of grass forwarded weie submitted to Mr G. M. Thomson, F L.Sr. mho reports as follows- — (1) Agrostis iiba (Fiorin), introduced from Britain. A iair pasture grass, but not of much value for fodder. ' (2) Poa tmiahs, a'so introduced from Britain — allied to the meadow grass, Poa pratenns, — which is considered <n;ch i bad couch grass here, but without the creeping habit. Isltv ask 3 for a recipe for home-made beer. — 'i'iio maf-iials foi makic-g 10 gallons of home-made beer are: — Half a bushel of cru'-liPd malt. 101 b brown sugar 21b treacle The process is . Put the malt in ' large tub, and pcuc 14 gallons of boiling water on tcp of the ma t. stir for five minutes, then cover up closplv to keep the steam in, stir every 15 minu'ess- replacing the cover after stirring. Lrcl c:ol in the mash; when cc.'d. strain through p bag oj cloth, into a boiler To this liquid add the sugar and treacle and lib best hops Boil the viho!& for four hours, then cool quickh I in a tub. When cold add one pint of brewer's yeast; let it ferment tor six hours, then pour into a small barre , keepa bucketful of tbs l'quid for filling-up purposes. Tha liqucx mv.it now bs allowed to fern.ent for a few days, during which j tnvo the barrel mu-t be kept full, allowing the yeast to inn over. When ferro°ntation ceases clean the outside of the barrel. Now piu 2oz of isinglass in half a pint of cold water, and let. it stand for two hours. To this add half a pint of cold water, and when cold pour it into the beer and burg closely for one week, when it. will bs ready for the table. Back Blocks — H. M Davey, consulting engineer, Princes street, replies : — With your amount of 15 cubic feet of water a minute, at the pressure you mention, you should get about 2 B.H.P. A suitable wheel would be about 18 inches or so in dimeter, going at say from 500 to 520 per minute. You might do with a 4in pipe line, though sin might be better, as it allows a s ower passage, of water through the pipes, and therefore less friction, which meats more power to the wheel. Through the courtesy of Mt Jcnes, of Messrs Turnbull and Jones, electricians, Octagon. Dwnedin, I have to inform you that you could get aboat 18 lights, of about 16 candle power, buy by using metallic fillaments piobab'y twice that number could be had FißEKi'.N.— ln its wider and more general sense the Scandinavian language is German. Of the great German stocl- there aTe two divisions, the Scandinavian, or Norse, and the Teutonic, or German proper. At present the languages of Sweden and Denmark, though mutua ly intelligible, are treated a= distinct The Swedss use the ordinary Italian alphabet, whilst the Danes prefer the old German block letters. The reply to your question, however, is that the Swedish and German languages are distinct and separate languages.