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"Precisely, Ned: so that at 32 feet beneath the surface of the sea you would undergo a pressure of 97,500 lb.; at 320 feet, ten times that pressure; at 3,200 feet, a hundred times that pressure; lastly, at 32,000 feet, a thousand times that pressure would be 97,500,000 lb. that is to say, that you would be flattened as if you had been drawn from the plates of a hydraulic machine!"
If one or more of the hooks are on the bottom the tackle will do for different kinds of flat fish as well, flounders and dabs being the two species most often caught by anglers. It is an early morning or rather a nocturnal fish, and grows to a weight of 3 lb or 4 lb. Occasionally it will feed in mid-water or even close to the surface.
Chrome. 2 " Argol or Tartar. Or without argol or tartar, but I think their use is beneficial. Boil twenty minutes, lift, rinse through two waters. To prepare dye boiler, put in 2 lb. logwood, boil twenty minutes. Clear the face same way as before described.
Crossley's works you will have an opportunity of seeing a large engineering factory employing several hundred mechanics, and without a chimney, in which every shaft and tool is driven by gas-engines supplied by Dowson's gas, and in which the consumption of coal is only 1.2 lb. per indicated horse power.
The still is charged with 25 to 50 lb. of roses, not previously deprived of their calyces, and double the volume of spring water. The exhausted flowers are removed from the still, and the decoction is used for the next distillation, instead of fresh water.
1/2 lb. raisins, 1/2 lb. sultanas, 1/2 lb. currants, 1/2 lb. castor sugar, 1/4 lb. nutter, 1/2 a nutmeg, grated rind of 2 lemons, 1-1/2 lb. apples. Well wash all the dried fruit in warm water, and allow to dry thoroughly before using. Stone the raisins, pick the sultanas, and rub the currants in a cloth to remove stalks. Wash and core the apples, but do not peel them.
Should the same surface be wafted downward like a wing with the hinder edge inclined upward in an angle of about 50 deg. 40 feet to the current it will overtake it at a velocity of 3.5 feet per second; and as a slight unknown angle of resistance generates a lb. pressure per square foot at this velocity, probably a waft of a little more than 4 feet per second would produce this effect, one-tenth part of which would be the propelling power.
The rule, therefore, for the actual horse power of a high pressure engine will stand thus: square the diameter of the cylinder in inches, multiply by the pressure of the steam in the cylinder per square inch less 1-1/2 lb., and by the speed of the piston in feet per minute, and divide by 42,017; the quotient is the actual horse power.
After a few days we were able to build him an igloo of ice-blocks, with a tarpaulin over the top as a roof. "Our rations are just sufficient to keep us alive, but we all feel that we could eat twice as much as we get. An average day's food at present consists of ½ lb. of seal with ¾ pint of tea for breakfast, a 4- oz. bannock with milk for lunch, and ¾ pint of seal stew for supper.
Very well, when you dive, Ned, as many times 32 feet of water as there are above you, so many times does your body bear a pressure equal to that of the atmosphere, that is to say, 15 lb. for each square inch of its surface.
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