WHITE SLATES.

Waikato Times, Volume XVIII, Issue 1553, 17 June 1882, Page 2 (Supplement)

WHITE SLATES.

A GEBMiN, named Schmidt, has patented a eohool elate whioh consists essentially o! a stiff pieoo of white oardboard, covered with artificial or paper parobment prepared by the aotion of salphario aoid apon Unsized paper. They are set in the ordinary wooden frame, and famish a ohetp and indesiruotible slate. The ordinary. size sells for 30 pfennigs (7J oenie). He also makes a peoaliar kind oi ink for use vritb these slates, called " children's ink: " (Kinder tinte). It is made of harmless mineral ootouru snd a lolution oi dexiriue, and has an advantage over ooinmou ink, that the blots whioh children are sure to make c?n be easily washed oat with cold water. The same slate can also be need to write on with ordinary iok or lead pencil, and both washed off with a 1 moistened tponge. When the elates are intended for use with lead pencils they are coated with water glass, whioh permits of writing npon the slate 'immediately after washing und while •till W6t. Uin «he coarse of time the water glass i film gets dirty, it oan be removed with a piece of sandpaper and a new ooating applied/with' a sponge, Tiie table* .itself shows , through 'the parchment. and water glass film perfectly 1 mat white, whioh permits of its being ased in any light, aad is especially advantageous Jfor drawing, beoaase theehading of 'drawing i«,blaok, and that .is more, natnral than to !make white shading with "White ohalk. f Oolonred penoils ox crayons oan also be ased, ■and is useful in teaching natural historj. ( — Scientific American.

♦ ; Cattle Bbstaubants. — The latest i wrinkle in America in, connection with the 'transportation "o£ ottttleis that of Mr. Tingley, ' olj the » Humane/ Live ' Sfidck Eatress 1 Company. Some > time' a&o the' Bfcme Vi gentleman^ ►invented a- foedf oar> ItheoieticfcUyVobd but;pr*cti<3»Uy a failnt^ ]The grain and.watef • wete placed 1 on', the' jiopf, < und^pfteVed ?tosm ty&pipfx; "Wlteif 'reqnired ; -but' the troTlghs in^the' fcrowaed |C*ttie,y-., l 9w^.,,g9^|^jty/;^d^)j^^^

ley's present schema ia a simple one. It is to establish a , number of " cattle restaurants/ along each line of railroad that transports livestock. They will be two hundred miles apart, and the cattle oan be fed and watered every twelve hours. When a trainV with, a load of cattle on board-gets within twenty miles o£ one of these restaurants, a telegram will be sefct to the officer ia charge, and when the train arrives everything will be in readiness. Great iron cups, about as large as and something of the shape of a good-sized kitohen pot, will contain food and water run into them through rubber pipes from • tanks above. The train will stop between two rows of these troughs, those on one side containing water, and those on the other side containing four quarts of food, consisting of a mixture of ground corn, i oats, and out hay. Each car will havesixteen openings on each aide, all of which; can be easily closed when the ear — which; need be nothing more than an ordinary I cattle car, such as is at present used is I required for other purposes on the rea m' trip. The device for moving the water and feed troughs to the openings is not oompli-! cated. ; The elevator of a wholesale drug house' in Kansas City, Mo., loaded with sulphur,; fell from the fourth story to the basement.! and the concussion caused an explosion which set the establishment on fire. A porter, named Pinkhard, who was in thY elevator with the sulphur, was terribly injured. — New York Ledger.