2159. Japanese Cement

2159.     Japanese Cement. Intimately mix the best powdered rice with a little cold water, then gradually add boiling water until a proper consistence is acquired, being particularly careful to keep it well stirred all the time; lastly, it must be boiled for one minute in a clean sauce-pan or earthen pipkin. This glue is beautifully white and almost transparent, for which reason it is well adapted for fancy paper work, which requires a strong and colorless cement.

2160. Curd Cement

2160.    Curd Cement. Add 1/2 pint vinegar to 1/2 pint skimmed milk. Mix the curd with the whites of 5 eggs well beaten, and sufficient powdered quick-lime sifted in with constant stirring, so as to form a paste. It resists water, and a moderate degree of heat, and is useful for joining small pieces of marble or alabaster.

2161. To Make a Cement that will Resist Benzine and Petroleum

2161.    To Make a Cement that will Resist Benzine and Petroleum. It has quite recently been discovered that gelatine mixed with glycerine yields a compound liquid when hot, but which solidifies on cooling, and forms a tough, elastic substance, having much the appearance and characteristics of India rubber. The two substances united form a mixture entirely and absolutely insoluble in petroleum or benzine, and the great problem of making casks impervious to these fluids is at once solved by brushing or painting them on the inside with the compound. This is also used for printers' rollers and for buffers of stamps, as benzine or petroleum will clean them when dirty in the most perfect manner and in an incredibly short space of time. "Water must not be used with this compound.

2162. Cement to Resist Petroleum

2162.    Cement to Resist Petroleum. A cement peculiarly adapted to stand petroleum or any of its distillates is made by boiling 3 parts resin with 1 caustic soda and 5 water. This forms a resin soap which is afterward mixed with half its weight of plaster of Paris, zinc white, white lead, or precipitated chalk. The plaster hardens in about 40 minutes.

2163. Cement for Aquaria

2163.     Cement for Aquaria. Mix 3 pounds well dried Venetian red (finely powdered) with 1 pound oxide of iron, and add as much boiling oil as will reduce it to a stiff paste.

2164. Cement for Marine Aquaria

2164.    Cement for Marine Aquaria. Take 10 parts by measure litharge, 10 parts plaster of Paris, 10 parts dry white sand, 1 part finely powdered resin, and mix them, when wanted for use, into a pretty stiff putty with boiled linseed oil. This will stick to wood, stone, metal, or glass, and hardens under water. It is also good for marine aquaria, as it resists the action of salt water. It is better not to use the tank until 3 days after it has been cemented.

2165. Water Cement

2165.    Water Cement. Manganese is found to be a valuable ingredient in water cements. 4 parts gray clay are to be mixed with 6 parts black oxide of manganese, and about 90 parts good lime stone reduced to fine powder, the whole to be calcined to expel the carbonic acid; when well calcined and cooled, to be worked into the consistence of a stiff paste, with 60 parts washed sand.