A spontaneously moving stone ball in a cemetery at Marion, Ohio, is attracting a great deal of attention It is 36 in. in diameter and rests upon a heavy pedestal. This ball is slowly turning upon its base, revolving about a horizontal axis in a direction from north to south, presumably by the action of the sun's rays. The monument was erected a number of years ago, but its movement was not known until the spring of 1904, since which time it has been watched and measured repeatedly, and it is established beyond question that the stone is turning continually. The ball was never securely fastened to the base, but an unpolished part of it was set in a socket, and the friction of the two rough surfaces was relied upon to prevent any displacement. At the present time, however, the rough spot is nearly half way to the top on the north side, and has moved more than 5 in. since August 1 last year. There is very little chance for the perpetration of a hoax in connection with this interesting phenomenon, as the ball weighs 4200 pounds and would require extensive machinery to move it. The State geologist suggests that the rotary movement is probably due to two causes. First, the ball becomes more heated than the heavy base and consequently expands more, giving rise to a slight creeping. The ensuing contraction might not be sufficient to take up the displacement caused by the heat in the earlier part of the day. Secondly, the circumference of the sphere may be regard-as lengthening out on one side and giving rise to a pulling stress between the ball and the base upon which it rests.
There are about 70 generally recognized elements; 13 of the 70 are non-metallic, these being sulphur, phosphorus, fluorin, chloiin, iodine, bromine, silicon, boron, carbon, nitrogen, hydrogen, oxygen and selenium. The remainder are deemed to be metals and there are thus 67 known metals, the greater part of which are, because of their rarity, of no commercial value.
Repeated successful experiments in various parts of the United States have abundantly proven that a weak solution of copper sulphate will clear water polluted with algae and other organic substances. When applied in proper amount water is usually clear within four days from the time of application.
Paper making from furze may, if successful, open up a large class of new paper-making materials and possibly prove the solution to the serious problem caused by the rapid exhaustion of the timber districts in the effort to meet the demand for wood pulp, the now universally used material. It has been ascertained that the furze, suitably treated, produces a very white and solid pulp by the following treatment: 1000 kilogrammes of the green plant, cut up as fine as possible, are mixed with caustic soda lye of 30° B. and raised to a temperature of 170° in an autoclave, under pressure. After a boiling of five or six hours, the pulp is washed with water, accidulated with sulphuric acid in suitable quantity, bleached with chloride of lime and washed thoroughly, when it is in a suitable state for employment in the manufacture of paper.
The flowing of solid concrete is an accomplished fact. Compression tests recently carried out by Prof. H. Woolson, of Columbia University, on cylindrical test pieces of concrete seventeen days old and 12 in. by 4 in. diameter, showed that the material flowed under a load of 120,000 lb. to 150,000 lb. The concrete was contained in steel tubes. Two test pieces were compressed by more than 3 in., and the diameter correspondingly increased. It was supposed that this excessive distortion had completely disintegrated the concrete and left in a powdered mass, but when the steel tube was sawn apart and removed, the concrete was found to have taken the exact shape of the distorted tube and was solid and perfect.