ATMOSPHERIC TELEGRAPHY.

Waikato Times, Volume VII, Issue 371, 29 September 1874, Page 2

ATMOSPHERIC TELEGRAPHY.

' On Tuesday afternoon an interesting exhibition of telegraphic iiadliiufes. worked exclusively by air wan held by Mr Guattaris, the iirventor, in the Pillar | Hall of the City Terminus Hotel, Cannon Street^ A number of different instruments were on \ iew, but the motive power, in overy instance was excited by the impulse given to a column of air at one end being transmitted instantaneously to the other end of the column, and taking, eilect upon certain mechanical arrangements so as to produce such results as might be required. The impulse is produced at- one end of a tube by the operator, and .performs, the mechanical work at the other end eithe by ringing a bell or turning a needle round a dial. Very- many contrivances of telegraphing by air have boen invented, but Mv Guattariß claims for his invention' a miperiority over others in the fact that a complete message oau be despatched by its means. Moreover, a fatal defect in other inventions of a like! character has arisen from the fact that each air tube could convey only one signal in one direction, so that a telegraphic alphabet would require twentysix tubes lor transmission, and the same number for reply. Tin's difficulty Mr Guattaris has completely got rid of, his instruments being only worked by a single tube, along which the air is impelled in each direction. Tho lapidity and precision can be made equal to the electric telegiaph, the conducting tube being able (o be laid under or over cover in tho ssanio maiinor as the ordinary telegraph. Attached to each machine is a boll and dial, and. the message is transmitted by the moving of a small lever which drives the air through a pipe to the other operator. As the lever is moved up and down, tho dial which stands where the message is destined for, registers whatever the words may be. Each dial is supplied J with a needle, and as each spurt of air presses against the works of the machine the needle is moved exactly the number of times that tli c lev er is pressed. Each instrument can either receive or send a message. The mechanism is not likely to become disarranged ; but it'apjtears that tlVe invention will not transmit messages any great distance. By tho ajd ; pA e^mpre^jgjd air the inventor has .succeeded in conveying a message ten miles ; but without compressed air tlie present linlit is about ■ 400 yards. The instruments exhibited weie do- " signed for intercommunication between large coft'ee house?, oltiees, hotels, and vessels.

Officer: "Not drunk, sir? Why, it's us much as you can do now to stand up tilone." O'Flalierty : "Stand up, is it? Sure and its, this Iwd black eye I'vn got by nothing else but standing up to Private O'Connor. — Judy. The following testimony to the a h tues of a patent manure was lately received by its owner : — " Dear Sir ; — The land composing my farm had hitherto been so poor that a Scotcliur.ui could not get a li\ ing off it, and so stony that we had to slice our potatoes 1 • and plant them edgeways; but, hearing of your manure, 'l put some on a ten-acre field surrounded by a railroad feuce, and in the morning I ibund that the rock had entiiely disappeared, a neat stone wall encircled the field, and the rails were split into lirewood, and pilcHl up systematically in my backyard." Hot weather is a trying time for young trees and shrubs lecently planted. Those that were set this spring, and have appeared to be doing well thus far, mty succumb to the long continued drought and heat of midsummer. It is safest to mulch all young trees, but where this has not been done all those that show signs of suffering should be attended to at once. A timely mulching may save the tree. It makes but little difference what material is, used so that the soil around the trees is prevented from losing its moisture by evaporation. Stones, if most convenient, will answer as well as anything. If the trunk is fully exposed to the sun, it should be pio-, tected from intense heat. A couple of boards tacked together like a trough, and set up against the trunk wjll furnish the required shade, or tho trunk may be bound, with a hay rope, or be loosely strawed up as for winter protection,