| Show Gold Is Cheap Compared With Withof of Them V London V somewhere in earth perhaps V In th are metals of re called V rare they have been found only ip trilling quan They be some In it a case of and YOU will find Altogether there or forty of rare fetch i big prIce In the market Mapy of them are bought merely for museums and title experiment but others are very valuable substances commercially Uranium for instance from which the magIc element radium has been sep V Is worth when chemically pure over per A ton of 10 per ore would 50 and 60 Uranium is very in the of for in l armor plate It gives a aV V gaon hue to and a velvety black to porcelain As everyone In aware this precious metal is in pit pw i to it when That V is nOt an matter But there should be po great iii recognizing many of the metals responds of to tests pe to itself and one of the teats for a uranium compound that when wIth nile salt and in the familiar blowpipe it forms a green In the inner flame and bead in the outer flame which becomes yel on cooling Some of the metals used in incandescent light are thorium and cc or rather their and cerla Cerium was t century ago and yet it Is still rare It Is as uranium Thorium an V metal wap found In Both are much for with the result that the Tatter has fallen itt price during the peat ten years from 36 to a few per pound A curious thing in connection with these metals is that brilliant white which they give is not natural to either of then alone of them separ a light of very lit littie tie power Cerium ha other uses In medicine It is a cure for hysteria and seasickness And It is also in the development of aniline black Another very and very rave metal used for lighting purposes Is zirconium This was discovered years ago yet no one has yet bad the good fortune to find t deposIt as would make him a mIllionaire It Itis is present In several strange named minerals as alto hyacinth etc One valuable prop property erty of this rare metal Is that very in tenie heat not t Hence V It is used of the for lighthouses being made to by the V hegt of the The tier good ts ever after months Is worth 10 shillings pr gramme One ton of bring Q Its over half a million of money But some of the compounds of are splendid gem worth 2 par carat or per Then there is molybdenum which V forms a most remarkable compound With both and be beaten for and yet at the time It Itis is exceedingly and a line alloy fOr wIre drawing rge VV of great strength are made o it propel propeller ler rIfle barrels boats ahil armer piercIng shells It is or Watt some time ago worth 9 per weight bps the of hardening and It is much used in armor plate So small a quantity as one pound added to pounds of steel strength irom tons anda half to thirteen tons per square inch William was up tp U very recent date priced at the rate of per ton and Is fOl fOlI I is very soft ami cp be with a One of its V ion ionIs Is that It makes a mark on paper like I a lend pencil which is V blue at then turns yellow andin a f ades away altogether A metal whose Supply has yet equaled the demand although it was discovered nearly two ago 1 platinum Only about four and a half were found In the year In Russia and it was at t tV he rate of per ton The V of platinum arises from Its V to heat and acids It deed slot irni until a temperature of Fahrenheit is reached and is there therefore fore most useful in as and wire Zealand New Wales and British Columbia are hutt I ng grounds for this A few of the other rare elements which are turned to are Iridium gallium lih l um and r the lightest of all metals half the weight of V l lV sa velL for gout Palladium about as hard as steel is very In the mechanism of watches as it does V not rust in damp air V V Iridium an extremely hard V V metal i used for watch bearings f delicate ances and as pen to small grains go to he and one of these Is taken the wIth silver solder split and ground to Iridium is worth about per ton and palladium about Gallium so soft that It melts In t hand makes a much better mirror than hilt as the Is per ton gallium mirrors are rarer the metal Itself Besides the hidden tren V urea there are more for Which no use has yet heeti which are very valuable as scientific |
