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In a square inch on the palm of the hand have been counted, through a microscope, thirty-five hundred of these tubes. Each one of them is about a quarter of an inch in length, including its coils. This makes the united lengths of these little tubes to be seventy-three feet to a square inch. Their united length, over the whole body is thus calculated to be equal to twenty-eight miles.
As the mass of rags is tossed and shaken about, the loosened dust is carried away by the suction of the air, which draws the dust particles into tubes furnished with suction fans.
For the benefit of those who have not, however, it may be stated that the Kangaroo, "the Little Kangaroo," as she was ironically named among sailor men, was the very latest development of the science of modern ship-building. Everything about her, from the electric light and boiler tubes up, was on a new and patent system.
Its power must be familiar to all who remember the lifting of the tubes of the Britannia Bridge, and the launching of the Great Eastern. An oil-mill is in form something like a flour-mill. The operation begins at the top, where the seed is passed through a flat screw or shaker and then through a pair of rollers, which crush it.
In this way, I spent five or six weeks in continual observation. To succeed in an enquiry, the first and foremost condition is patience. This condition I fulfilled; and it was rewarded with the success which I was justified in expecting. The tubes employed are of two kinds.
The chief engineer notifies the captain as soon as the tanks are sufficiently filled and an even weight is established so as to steer the boat to the proper depth for attack. Notwithstanding the noise of the machinery, large, wide-open speaking tubes facilitate the delivery of orders between the commander's turret and the Central, and now is the moment the commander gives the order to submerge.
The bottom of the tubes are 124 feet above low water mark, so that large ships can pass under them, under full sail. The total length of the bridge is 1841 feet. These tubes are not round or oval, but nearly square at the termini; the bridge being constructed on the principle of the arch.
I will assist in filling the tubes with wire, and the resinous coating, and I will devote my whole time and attention to the business so as to secure a favorable result, and should you wish to devolve upon me any other business connected with the Telegraph, I will cheerfully undertake it. Three dollars per diem, with travelling expenses, I shall deem a satisfactory salary.
These minute tubes are lined with capillary blood-vessels, which are constantly sending out not only carbonic acid, but other gases and particles of decayed matter. The skin and lungs together, in one day and night, throw out three quarters of a pound of charcoal as carbonic acid, beside other gases and water.
Make a thick starch paste; place some in test tubes, labeled A and B. Keep A for comparison, and to B add saliva, and expose both to about 104 degrees F. A is unaffected, while B soon becomes fluid within two minutes and loses its opalescence; this liquefaction is a process quite antecedent to the saccharifying process which follows. Experiment 68. To show the action of gastric juice on milk.
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