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Updated: June 22, 2025
"Perpendiculars, be plumb, and lay your enemies on their backs!" After this I fell in with "But I should fill the manuscript with nothing else, were I to record a tithe of the commendations and abuse that were heaped on us all, by a community to whom, as yet, we were absolutely strangers. A single sample of the latter will suffice."
It is this latter arrangement which forms the subject of our illustration, the vessel represented being of the following dimensions: Length between perpendiculars, 350 feet; breadth, moulded, 40 feet; depth, moulded, 32 feet; tons, B. M., 2,600; tons net, 2,000.
Let CP and CS be prolonged and meet the tangent DM at D and Z; and from the point of contact M let MN and MO be drawn as perpendiculars to CP and CS. Now because the angles SCP, GCL, are right angles, the angle PCL will be equal to GCS which was 45 degrees 20 minutes.
She was long, narrow, of extremely low freeboard, and slight depth of hold; a galley of 125 feet between perpendiculars would perhaps be 180 feet over all taking in the poop and the prow. A galley of this length would only have a beam of 19 feet and a depth of hold of 7 feet 6 inches.
She measured one hundred and twenty feet in length between perpendiculars, and was thirty feet beam at her widest part, which dimensions gave her a measurement of close upon five hundred tons.
And the measure of these angles is found by describing, about the point B, a circle which cuts the radii AB, BC. For the perpendiculars AD, CE, let fall from the points of intersection upon the straight line DE, which are called the Sines of the angles ABD, CBE, have a certain ratio between themselves; which ratio is always the same for all inclinations of the incident ray, at least for a given transparent body.
If there had been a ladder applied to the front of the house, even one of the vertiginous perpendiculars employed by painters and roofers and sometimes left standing overnight, he would have managed somehow, astride of the window-sill, to compass by outstretched leg and arm that mode of descent.
So this important point was finally decided for the moment, leaving great hopes among the Perpendiculars of being able to lay the Horizontals even flatter on their backs than they were just then. The next question that presented itself was of far less interest, exciting no great attention. To understand it, however, it will be necessary to refer a little to history.
Ice is a familiar example: its molecules are built with perfect symmetry around the perpendiculars to the planes of freezing, and a ray sent through ice in this direction is not doubly refracted; whereas, in all other directions, it is. Iceland spar is another example of the same kind: its molecules are built symmetrically round the line uniting the two blunt angles of the rhomb.
These persons were hardly off the deck, before another party came up the opposite side of the ship. They announced themselves to be a nominating committee of the Perpendiculars, on exactly the same errand as their opponents. They, too, wished to propitiate the foreign interests, and were in search of a proper candidate.
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