Aide-mémoire for the use of officers of Royal engineers

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Page 275 - That the means of passing freely through the encampment with a large front be maintained : 3. That the tents be disposed with a view to the greatest amount of order, cleanliness, ventilation, and salubrity : 4.
Page 384 - ... level to the centre of bulb by the two antagonising screws at bottom of vertical vernier-plate. Turn round 180° ; and if the vertical limb's level is disturbed, correct half of the error by the foot-screws and half by the two antagonistic screws. Turn the horizontal plate 90°, and repeat the process till accuracy is obtained. If the bubble of the level attached to the horizontal plate is now disturbed, bring it to centre of bulb by the capstan-headed screw, so as to make it an index of horizontality....
Page 384 - ... vertical verniers read as at first, the vertical Collimation is correct. If not, the mean of the readings is the true angular deviation from the horizontal. By means of the vertical limb's tangentscrew make the vertical verniers read this true deviation, and intersect the distant point by means of the antagonising screws. This will disturb the level of the vertical limb. Restore its horizontality by means of the capstan-headed adjusting screws. The verniers should now read the same angle in both...
Page 59 - The best material for conductors is copper, either in tubes 1 £ to 2 inches diameter and .125 inch to .2 inch thick, or wire rope. All metal surfaces, whether lead, copper, or iron, on ridges, roofs, gutters, or coverings to doors or windows, to be connected by plates of copper with the conducting system.
Page 389 - The arc NP being the complement of PZ, it follows that the altitude of the elevated pole is equal to the latitude of the place of observation. The triangle ZPM then (however much it may vary in shape for different positions of the star M ), always contains the following five magnitudes : PZ— co-latitude of observer = 90°...
Page 313 - ... either warm or cold. The juice of a lemon may be introduced, which will make it more palatable and refreshing. THE PUDDING. Add to the rice 3 oz. of sugar, 4 tablespoonfuls of flour, half a teaspoonful of pounded cinnamon ; stir it on the fire carefully for five or ten minutes ; put it in a tin or pie-dish, and bake. By boiling the rice a quarter of an hour longer, it will be very good to cat without baking.
Page 388 - A'", then adding (A'" — A') with its proper sign to B' we get a value, say B"'. " Adjust the instrument by .means of the parallel plate screws to read B'
Page 27 - = the first term, I = the last term, n = the number of terms, r = the ratio, s = the sum of the terms.
Page 59 - The Index of refraction Is the ratio between the sines of the angles of incidence and of refraction of...
Page 277 - The captains will dress the men from left to right of companies (or vice versa), a mounted officer covering them in succession from the FRONT. Each tent squad will bring up a tent, pegs, and pole, open the tent bag, and drive a peg between the heels of the pole man, who will grasp the pole ; the tent will then be opened and placed on the pole.

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