(1) Ordinary glazed paper, preferably of a citron-yellow colour, is wiped over with a damp sponge, and then again allowed to dry. The ink used for writing the labels is prepared from 3 parts extract of logwood and 1 of bichromate of potassium, dissolved in 30 of water. After standing until it has become clear, the liquid is decanted from the sediment, and 2 parts gum arabic are then added. When the writing has become dry, the label is affixed to the receptacle by means of a glue-paste, prepared by pouring a boiling solution of carpenters' glue into a cold prepared paste made from wheat-flour and water. When the label has become dry, it is brushed over twice with the same glue-paste, the second application being delayed until the first is dry. Finally the label is varnished over with damar varnish containing 10 per cent, of Canada balsam. (R. Triest.)

(2) Affix a common paper label and let it dry; then heat the label (by a Bunsen burner of very small flame) till it will just melt paraffin rubbed on it. The label is absolutely protected, and looks as if it were enamelled on the glass. If the neck and lip of the bottle and the stopper,are similarly treated, a perfect airtight joint is secured and the stopper never sets, while liquids can be poured out without running down the sides.

(3) Brash the paper labels with thin size, and afterwards with the ordinary photographers' spirit varnish, or with common white hard varnish, applied before the fire. Or yon can paint the name direct on the glass with Bate's black (a superior kind of Brunswick black), sold by the photo, dealers. A simple waterproof cement for labels is made by stirring linseed-oil into hot glue, 1 part oil to 3 or 4 of glue, which should, of course, be previously soaked and dissolved in water to about the consistency used by carpenters.

(4) Paper labels, attached in the usual manner, and, when dry, varnished over with 2 or 3 coats of good copal varnish, will be found to resist almost all chemicals except liquor potassse and liquor sodae.

(5) Glass Labels

When, as will sometimes occur in sudden change of weather, or from age, glass bottle-labels drop off, leaving the resinous layer, together with the lettering, adherent to the bottle, they may again be fastened by painting the glass and label with concentrated solution of white shellac, and holding the glass in place for a few days by means of an elastic band.

(6) Removal Of Encaustic Letters

The signatures, letters, numbers, etc, upon porcelain vessels may be removed without injury to the glazing, by protracted polishing with a piece of pumice moistened with concentrated hydro* chloric acid. The removal is facilitated by previously exposing the signatures to the vapours of hydrochloric acid.

(7) Label Varnish

One of the best label varnishes is the following :-

Sandarac (in coarse powder) 100 parts.

Mastic „ „ . 40 „

Copailia .... 15 „

Venice turpentine . 30 „

Oil of turpentine . 40 „

Alcohol .... 90 „

Absolute alcohol... 90 „

Macerate until solution is effected.

(8) Writing Pn Glass With Common Or Indian Inks

Warm the glass to 120-140° F.f until vapour is no longer deposited. Then bathe the surface with the following varnish, moving the plate as when applying collodion in photographic work. The varnish consists of 80 grams 95 per cent, alcohol, 5 grams mastic in sheets, and 8 grams damar. The solution is made in a firmly-corked bottle on the water-bath, and then filtered. This varnish is very hard, brilliant, and transparent. Drawings in common or Indian ink can be made on this surface;' after completion, a thin layer of gum is added. This method can be used for marking bottles, designs for projecting on a screen, or for photographic purposes.

(9) A liquid for etching on glass has recently been introduced into commerce, and can be used with an ordinary pen. It consists of hydrofluoric acid, ammo* nium fluoride, and oxalic acid, and is thickened with barium sulphate. A better ink is obtained as follows: Equal parts of the double hydrogen ammonium fluoride and dried precipitated barium sulphate are ground together in a porcelain mortar. The mixture is then treated in a platinum, lead, or gutta-percha dish with fuming hydrofluoric acid, until the latter ceases to react. (Dingl Polyt.)