dry grinding

The cutler's mode of sharpen IMG:content-0597.png:[blocks in formation] out water. It is very injurious to the health. Two remedies, or rather protections, are afforded: (1) Abraham's magnetic-respirator, which arrests the particles of steel. [RESPIRATOR.] (2) Exposure of but a small portion of the stone, and a tube in the immediate vicinity of the work to carry off all the dust. IMG:content-0598.png:[blocks in formation] Printing: One in which the printed sheets are pre ed smooth. dry-rent, s . Law : A rent reserved without clause of distre . dry-rot, s . A name given to a decay in timber caused by the mycelium of several species of fungus, which under certain conditions of heat and moisture attack woodwork in ships, houses, and wooden erections in general, growing in the dark, and rapidly increasing in bulk, first covering the surface with a series of thread-like filaments, which are continually being added to, and ultimately forming a thick, leathery, white substance, such as is often found behind the partitions of walls, and under floors. It penetrates the wood in all directions, reducing it to powdery rottenne , in many cases doing irreparable mischief before it is observed. The perfect plant is only occasionally seen i uing from a crevice or some opening in the woodwork. The following are the names of two of the principal dry-rot fungi: Polyp or us hybrid us , which affects oak timber in ships, and P. destructor , as also The lep hora puteana , chiefly in pine-wood, in dwelling-houses and other buildings. Merulius lacrymans differs from the preceding in the thick mycelium being moist, often dripping like tears, hence its name lacrymans (weeping). Dædale a quercina grows on decaying stumps of trees, often attaining a large size. ( Smith .) dry-sand, s. Casting: A mixture of sand and loam which is employed in making molds subsequently dried in boil, boy; pout, jowl; cat, çell, chorus, an oven.