At Rlagenfurt, in Austro - Hungary, the electric process of pipe thawing is used somewhat extensively by the inhabitants. The winters in this region are very severe and the pipes are often frozen. The Hub-ner-Messimer electric firm adopted a system which has proven very successful says the "Electrical Review." A fifty-ampere transformer is installed in a convenient place near the electric lines and it is connected by two fuses to an ammeter which measures the current consumed and a rheostat. The wires from the secondary of the transformer are run to two points on the pipe which is to be thawed out. A pipe 150 feet long and half an inch in diameter can be thawed in three hours using a current of 50 amperes and 110 volts.

An interesting source of power is found at St. Pierre, S. D., where the city has decided to put in an incandescent electric light plant to be driven by waste water from the artesian wells. Tests have shown that water, coming under pressure, will develop more than enough power to operate such a plant.

In the petrified forests of Arizona there are trunks of trees three to four feet in diameter and over 100 feet in length, entirely changed to quartz. According to Dana, the trees now silicified in Arizona appear originally to have flourished on the shores of an inland lake into which they fell and became water logged; then they were buried beneath volcanic material of a highly silicious character, which underwent alteration through the action of water, setting free more silica than the water could hold in solution. As this change took place only particle by particle, the minutest cells of the wood are preserved and may be seen through the microscope.

Seidlitz powders are prepared in two parts, each contained in a separate envelope. The alkaline powder, which occupies the blue paper, consists of two drams of Rochelle salts (tartrate of soda and potash) and 40 grains of bicarbonate of soda, and the acid part occupies the white paper, and consists of 36 grains of tartaric acid.

When melting babbit metal, care must be taken not to overheat it, or the more easily melted constituents will partly evaporate, leaving the alloy in bad condition. Melt a small portion first and gradually add to it until all is melted. Then skim off the top and the metal is ready to pour. Before pouring the metal wrap a sheet of smooth, thin writing paper around the shaft or other journal to be babbited, and secure it by winding a string spiral, in turns, 1/2 in. apart. Then put in the bearing and pour the metal. The paper prevents the cold iron from too quickly chilling the babbit and gives it a smooth surface, while the grooves made by the string make good oil conduits. If this is properly done, the journals will fit the bearing nicely and will not require scraping.

For leather belts castor oil not only stops slipping, but gives the belt twice as long a life.

The following is a simple method of removing what is commonly called damps from a well which may be of interest, says James I. Bennett, in the " Engineer." I had charge of a plant where we had a deep well, which was dug down 75 feet, then drilled some 200 feet further. The water end of the pump was down in the dug part of the well where the drilled hole commenced. The steam end was above ground and a rod connecting the two was stayed to a timber set vertically in the well. It was necessary to go down into the well every time the pump was packed. For some reason or other it was impossible to get a lantern to burn at a depth greater than 3 feet below the surface. I tried everything I could think of, but it was no use. Finally I tried the plan of forcing air to the bottom of the well by attaching a 2-inch hose to the fan of a small portable forge and lowering one end of the hose to the bottom of the well. I found that I had mastered the difficulty and always felt safe when down in the well, with some one at the fan forcing fresh air to the bottom.