A "Paper-Jogger" is advertised in our American exchanges. It is said to secure the perfectly square laying-down of any kind of sheet (except tissue) as it leaves the flyer.

New Spring-Binding.—A patent spring-back binding for blank books has been invented in America, and adopted by the Government and principal commercial institutions. The book opens at any page perfectly flat, without the slightest curve towards the centre.

Waterproof Packing-Paper.—A new packing-paper, patented in Austria, is said to be superior to parchment for protection against dampness and wet. It is made up of two adhering sheets of paper with a coating of peculiarly-prepared waterproof black shellac on one or both sides. The paper is especially useful for packing goods to be transported by water, and lining of chests, as the shellacked sheet is smooth, noiseless, and will not crack if laid in sharp folds.

Brass Types for Posters.— In the February number of Typo-graphische Neuigkeiten, Herr Poppelbaum announces that he has introduced and is now manufacturing brass poster-types. They are light, durable, nearly as cheap as wood, and are accurate in body, height, lining, and width, besides being more readily cleansed and unaffected by atmospheric changes. The inventor says that no printer who has given the new types a trial will revert to wood. We have not seen any reference to this novelty in our English or American exchanges.

A Safety Chase has been patented by Mr J. B. Ellis, Leeds. By means of this invention, the largest poster forms can be securely locked up. A placard 63 × 34 inches in small type has been safely lifted and carried when locked up by this method; though no printer would run the risk with an ordinary chase. A groove runs round the inside of the chase and side-stick. Movable iron reglets, about a great primer wide, are supplied to the long and short measure of the poster; they are tongued at the ends, and move freely along the grooves. These are inserted at intervals, and effectually bind the matter, so that sinking in the centre is impossible.