ing Limitless POWER HEN scientists recently started a series of experiments to explore the atom, Which is so minute that it is estimated ' that six millions of thera can be gatheed on the point of a needle, Sir Richard Gregory, a world- famous scientist, was led to prophesy that '"'the day is not far distant when science may place at the disposal of man forces 80 strong that a hostile Army or an enemy city may be annihilated al- most by the touch of button." . e discovery of the secret of the atom's lim- itless power might, indeed, bring the return of the fabled Golden Age. Man would need 'to work no longer, for he would have at his dis- Josal the forces of the illimitabie ether, one cubic neh of which contains sufficient energy to drive a giant liner across the Atlantic and back three mes, A few days' directive effort, and man would ve an abundance of all matetial needs to supply his wants. Alluring as is this prospect of a Golden Age from which poverty, disease, and material prob- lems of existence wuld be banished, it has another side: a dark and . sinister side. Scientists believe that in the heart of the in- visible atom lies the salvation or the destruc- tion of the world. Some investigators have gone so far as to express the opinion that in this pulsing focus of "energy lies the power to blow up this whirling planet upon which man is plung- ing through space. And others who take a less fantastic view see for certain in this inevitable discovery the ul- timate annihilation of the human race. Although an atom ig invisible the fact that it can be heard was recently demonstrated at the University of Kansas. Dr. H. P. Cady, assisted by John trong, both of the department of chem- » Not only caused atoms to make a noise au- dible to observers in the laboratory, but the sound was caught by the university's radio sta- Sot U, and broadcast throughout the Cen- .. Dr. Cady's experiments were made with a Ley- den jar. @ negative pole of the jar was con. nected with a fine point nesdle, set like a light- ning rod in the center of the jar. Suspended to surround the negative point was a brass cylinder connected with the positive pole. : "When the jar was charged the electricity across the space between the cylinder and the point until the difference in potential wad re- ed to 4,000 volts," Dr. Cady said in explana- tion of the experiment. "There the resistance of the air stopped the discharge until a radioactive substance was brought within a few inches of the Spper opening of the briss cylinder and just Ei BT 1 en the es m um en- hai To: e ra tered the cyli air, and these multiplied by collision until the electric current oul pass again. By means of a amplifier this current, which was multiplied between 10,000,000 and 100,000,000 times within. the Leyden Jar, was multiplied 70,- 000 times and this power produced in a loud er a tone like that of a small bell struck ly 'and then muted or of a plucked viglin - substances strongly radioactive were presented to the instrument a continuous rattle ensued, but for substances less radioactive the single atoms Were separated enough to be count~ Radio Violin Is SENSATION js in store for music lovers, A according to the prediction which Patrick 4 Whelan makes in Popular Radio. This ~ feat, Mr. Whelan explains, may now be accom- plished by means of a co oud s er Riek that may be EAL Toide of the Petes and attached, by means of a wire, to a nearby recei set. Both the receiver and the wire © may be concealed, » may be repro- a broadcast by the violin itself, which has been trans- ed into a practical reproducer, and a lone bled fo play a concerto to the aceom- of a full symphon estra. Whelan thinks that this device offers to students who find the grind of daily prac- a bit wearisome the in. imable boon of an it, wot only by the world y the world's greatest orchestras. NY operated instrument is not ,!" says Mr. W lan, "but a real violin that bee nted produced fons from the Dr. T. F. Wall, noted engineer of Sheffield University, recently experimentéd in an attempt to disrupt the atom and relgase its energy by means of an extremely powerful magnetic field. Some day, possibly at a terrible moment, the great current of electricity may be released through that simple motion." The result no man can prophesy. A child could hold in the palm of his hand a metal brick containing enough explosive energy to blow up a million men! In an ordinary mo- tor-truck could be carried enough concentrated energy to level half a nation! But this force, so tremendously destructive, could also be the greatest benefactor of mankind. It could run the machinery of the world in- definitely, There is energy enough in a chunk of mud to run an automobile for weeks! The moderp sclentific view, as G. B. Seybold explains it in Popular Science monthly, is that everything, including man, is made up of atoms, each comprising a nucleus with a num er of elee- trons whirling about it in fixed orbits, just as planets revolve about the sun, at a tremendous ed, as great as 93,000 miles a second. ver has seen an atom, and no one ," declares Mr. Seybold, "for we see only by means of light, and the atom id so small that it escapes detection by the vibration of light waves. No miserope, no matter how powerful, ever can make the atom visible. to man. If a drop of water were maginified to the size of the earth, an atom in the liquid would appear the size of a baseball. "The: nucleus is still smaller than an electron. Give the atom a diameter of one mile, and an electron in it would be as large as a dining room table. Then place a pea in the center of the table. That represents the nucleus. "The number of electrons in ag atom and the Musical Sensation Model Used for Demonstrating the Structure of an Atom, Which, According' to Scientists, Is So Small That Six Million of Them Could Be Gathered on the Point of a Needle. re structure of its nucleus determine whether the substance is gold, iron, or some other element, In all except the simplest atom, that of hydrogen, the electrons revolve around the nueleus'in suc- cessive rings. Those traveling in orbits nearest the nucleus revolve with the greatest speed. "When any of these electrons are forced out of their pathways, dragged farther away from the nucleus, a great amount of energy is re- e electron jumps, and this lost energy is released in the form of waves. If the nucleus of an atom can be attacked and destroyed, the whole atom can be disrupted, causing the elec- trons to be shot out of their orbits." This actually can be seen in the case of ra- dium by a remarkable instrument that photo- graphs what is happening in the interior of an atom. As particles flying from radium passe" ify atoms in their path, through a gas, they electr and small drops-of moisture forming on these make a trail oF mist, which can be photographed. Thus, though the atom itself will forever remain How TREES Make the Air VERYONE, knows that a house standing among trees is far cooler in Summer than one that stands bare and unprotected, but if asked the reason .most people would answer, "Why, because trees give shade and keep off the sun." This is only half an answer, for trees do very much more than give shade. They tend to lower the temperature in their neighborhood, for dur- ing the day they give out arge quantities of moisture and so cool and purify the air, A certain botanist, who has given much thought to the matter, estimates that a good-sized foliage tree, such as an elm, may fewer than seven million surface of all these g i i PEE . A Composite Ph icturing the Poss he Energy Sealed a Force So Terr! Annihilating in Its ment to Loosen invisible, its travels can be ob: This photographic apparatus a radium atom b for one or two traveling in fixe suddenly it expl that of the gas, hel when the particle speed, the radium is b Transmutation o has revealed that ehaves just like any other atom thousand years--its electrons d orbits around a nucleus--then throwing off a new atom, ium. And in this process, being shot off at high f matter is taking place. d electrons in the atom, are like electric currents, a; atom intense magnetic fields gth that hitherto it has been oduce anything as But, if it were possibl a8 magnetic field as powerful as atom, and this field were im he argues, the orbits of th so disturbed that the struct be broken down, a would be released. Dr. Wall has obtained a Ss more intense than an by winding Sgveral layers Pp pressed on the atom, e 'electrons would be ure of the atom would nd some, or all, of its energy magnetic field 20 of thick insulated cop- tank filled with trans- tities of electricity are -immersed copper. remely powerful os- Ws in the coil for a producing a corre field, which p 3 For a minute fraction of le of permitting is intense magnetic ar intervals fo on the material ired to change. n a large glass The result is that an e: cillating electric current flo intense magnetic a second, the apparatus an equivalent to the coil. field is impressed at regul ks, and even months, atomic structure it is des "ZEBRULE" Is Curi AN has always crossed different species of domestic animals for his own convenience. The mule is a familiar the different breeds of do, a common stock. Amazing experiments of the nowadays. In East Africa, for instance, while all gs probably come from kind are frequent ast _and has the adwan - COOL ago did not trouble to say er in their writings, but the the help of records. the trunks of trees. When a found by counting powerful and f botanists do not need books they study are eve that they can de- ason was late or early, for Polishing FIN GERNAILS cide whether a specified se: A "BOW?" fd Bé Easily Bent LASS that could be bent without breaking was known in the days of ancient Rome, according to one of the tales that has come down to this day. Tradition relates that an exiled architect, on his return to Rome, peti- tioned the Emperor Tiberius that he might be permitted to remain in his native land. He presented the Emperor with a glass cup, which the latter much admired. To insure further favor, the architect then asked the return of the cup and threw it upon the floor with much force, causing it to be dented but not broken, He restored the cup to its original condition by means of a hammer. The Emperor was amazed and inquired whether others knew the secret, and, being assured that they did not, ordered the architect beheaded. Tiberius feared that if such knowledge should be imparted to others, they might make gold and silver worthless. Thus the secret of bendable glass, according to this legend, was lost to the world and was destined to remain .so until recently when Dr. Fritz Pollak and Dr. Kut Ripper, of Vienna, announced. their discovery of A new malleable glass that is said to be non-splintable, ten times clearer than ordinary glass, and easily bent. Concerning this new glass, the weekly maga. zine, Motor, has this to say: "Applied to motor-car windows and wind. screens the new material would have the trans- parency, whiteness and durability of glass, with a degree of flexibility that removes all dangers from splinters and jagged fractures. . "It is an organic (non-mineral) substance, It is sufficiently hard to be safe from accidental scratching, yet flexible enough to bend under stréss to a marked extent without fracture, Jt can be broken with the bare hands without risk, because the edges of the fracture are not sharp and jagged." A ball of the substance, when dropped on the floor, will bounce better than a golf ball, accord- ing to a contributor to the Glass' Container. will absorb any kind of dye, and delicate vege- table dyes can be used to color it. It can be made into imitation meerschaum pipes, cigar- holders, fancy umbrella handles and door knobs. In many instances it can be used in place of rubber or vuleanite. Its uses as suitable material for automobile windshields Seem apparent. One valuable property of this glass is that it will transmit the ultra-violet ray and, therefore, can be used as a shelter for Patients requiring sun treatment--also for greenhouses. A Piepan Radio Aerial HE only parts necessary to construct g serviceable indoor aerial are a pie pan, a portable telephone, battery clip and from ten to twenty feet of insulated copper wire. The battery clip should be clamped to the rim of the pan after a spot on the pan has been sand- pa; ered or scraped to secure a good contact. + e If the wave length is broad, insert a folded piece of news aper or piéce of card. board between the Phone base and the pie pan, How the William D. Cope, Piepan of Los Angeles, Aerial Is informs Radio Di- gest that he has found this form of aerial Fives sat- SEY, Isfactory © results. ous CROSS-BREED standing the climate better than either the horse or the ardinary mule, . New types of dog are always being produced, and it Is usual for the trapper of the North to mate a "husky" bitch with a wolf to keep up the strain of untiring sleigh dogs that still remain the best draft animals of the reat Northwest, In their wild state animals seldom choose mates of other species than their own, but it now appears that the fox, introduced into Australia to check the plague of rabbits, has crossed with , the Australian wild dog. ) The owledge of this cross has caused con. sternation among sheep farmers. The dingo has also crossed with a mastiff which found its wa ashore from a wreck, and the progeny is said to be Jere ig: he wild buffalo has been crossed n Canada the u 0 een with Hereford cattle, produci a very hardy animal, the meat of which is to be excellent. Recently a lion-tiger was presented to the London Zoo. The father is a lion, the mother a tiger, and the animal itself handsome beast with the characteristics of b its parents, NNA E. FREY, a Philadelphia woman, has invented a simple device for cleansing and i ails, consisting of a rect. metal, strung with cotton which a the outer sides of the legs of the instrument. and is clamped in cuts at the corners where they join the