The Montgomery advertiser., 1904-04-10

The perspectartlgraph is an ingenious instrument with which Otto Elchenber- ger, of Geneva, makes 1t easy for the amateur artist to give accurate perspec' tive to landscapes or drawings of any objects. A folding box opens to form table, and near the top of it's extensi- ble sides a telescope is so mounted that as it Is moved about in following the details of any view pencil is made to draw a corresponding line on a sheet of paper beneath. Crossed hairs in the telescope give precision, while the pen cil is kept upon the paper by sliding up and down in a suitable holder Beautiful drawings are made with little or no practice, and specimen work ex- hibited includes a panorama of the Alps and a view of Geneva.
 A new method of producing artificial respiration is claimed by Prof 6chafer. of Edinburgh, to be much more effec- tive in cases of drowning and asphyxia- tion than any other. Placing the sub- feet in a prone position. the operator applies pressure with his hands to the lower ribs, and repeats this about 1S times a minute by swinging himself backward and forward. The common moving the subjects arms Is condemned as of little value.
 The liquefaccioh of gelatin in old cann- ed meats has been found by Dr. Grixoni to be due to bacteria. As animals were poisoned both by injection and feeding. he concludes that canned meats that splash on being shaken are dangerous unless boiled before use.
 A mysterious midsummer hum," ap" parently high in air, has been recorded by an English observer. It is like the sound of bees, Is heard in June and July, and when a stone is thrown into the air large unknown insects are seen to fol- low 1t toward the ground.
 Old age Is found by Prof. Metchnikoff. of the Pasteur Institute. to be accom- panied by the atrophy of the higher and specific cells of tissue and their re- placement by hypertrophied connective tissue. Certain of the simpler tissues, such as the outer skin and the mucous membrane, do not grow old, but the more specialized cells, like those of the brain, liver and kidneys, are actually de- stroyed and replaced, at first by wan derlng cells and later by connective tis- sue, both of which are less specialized forms of living matter. incapable of per .forning the functions of important or
  tissues against the more enduring lower ones,-which constitutes the process of growing old.-Prof. Metchnikoff believes we should be able to take a voluntary part That Is. it may soon prove possi- ble to inject a serum to strengthen the higher functions and thus make old age A condition of health instead of disease
 The Finsen light is a specially con- etructed arc lamp of 20.000 candle-power, or twenty times stronger than an ordin- ary street lamp. and 1t produces an un- usually large percentage of violet rays. The concentrated rays are carried from the arc to the patient through tubes, all hut the violet being screened out by lenses. The light is practically a spe- cifc for lupus and other skin diseases. and six years of experience in his Copen- hagen institute-where 300 persons are now treated daily-leads Prof. Finsen to declare that @ per cent of even the worst cases of lupus can be cured. Tn nearly SOO cases cured the disease had continued for an average of eleven years.
 An apparatus making easy the seDara-