A Curious Calculation.

Star (Christchurch), Issue 4739, 2 September 1893, Page 3

A Curious Calculation.

The great coal-fields of Pennsylvania, according to Professor Langley, contain enough of the precious mineral to supply the wants of the United States for 1000 yeara. If all that tremendous accumulation of fuel were to be extracted and burned in one vast conflagration, the total quantity of heat that would ha produced would no doubt be stupendous ; and yet, says this authority, who has fcaught us so much about the sun, all the heat developed by that terrific coal fire would not be equal to that which the eun poura forth in the thousandth part of eachsingle second. Wheu we rtflecii that this expenditure of heat has been going on not alone for the centuries during which the earth haa been the abode of man, but also for thoße periods which we cannot estimate, except by saying that they are doubtless millions or years, during which there has been life on the Globe, then, indeed, we begin to comprehend how vast must have been the capital of beat with which the sun started on its career. Every moment of a man's life is spent in wearing out the complex molecules, which go to form thehuman organism. Remember, not a finger can be moved, a thought conceived, a breath inhaled, without wear and tear of the system. The first signs are neuralgia, fitful toothache, constipation, and headache, and when the3e symptoms manifest themselves, recourse must immediately ba had to a reliable remedy, as in the caae of Mr H. M'Donuld, salesman, Crown Btreet, Wbllongong, N.S.W., who "writes on March 28, 1893 :— 'About seven or eight years ago I was thrown from ahorse, and was laid up for some time af tier wards. Although I was told that it was only a strain, I believed that my apine was injured to a certain extent: The symptoms following the accident were intense pain extending along the spinal cord. I had the advice of some of the leading doctors in the Colony, but never derived any benefit from their remedies. The symptoms were acute pains in the small of my back, at times hardly able to straighten myself after arising from bed. I was advised to try Clements Tonic. Not having any faith in it at' first, I took it with reluctance, as I had known so many failures in advertised remedies. By the time I had used three bottles I found that I had received more benefit than from, all the medicines I had taken hitherto. I paid to one doctor alone .£l7, and never received j the slightest benefit for my money. lam ! only too happy to 6ay that I derived more "benefit from three battles of Clements Tonic than all the medicines I had taken hitherto. If the foregoing will be of any use to you, you are liberty to use itasycu think fit, Trusting that other sufferers may know oi : the good qualities of Clements Tonic, and may derive the same benefit that I have done,— l remain, you ra truly, H. M' Donald , salesman, Crown street, Wollongong, ; N.S.W. j To he obtained from Messrs Cook atid Eosb, Colombo street.