The celestial planispheres, or astronomical charts (Google eBook)

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Page 14 - tis said), to save the tedious multiplication and division in astronomical calculations. Neper being solicitous to know further of him concerning this matter, he could give no other account of it, than that it was by proportional numbers, which hint Neper taking, he desired him at...
Page 14 - tis said) to save the tedious multiplication and division in astronomical calculations. Neper being solicitous to know farther of him concerning this matter, he could give no other account of it, than that it was by proportionable numbers.
Page 14 - Neper being solicitous to know farther of him concerning this matter, he could give no other account of it, than that it was by proportionable numbers. Which hint Neper taking, he desired him at his return to call upon him again. Craig, after some weeks had passed, did so, and Neper then shewed him a rude draught of that he called ' Canon Mirabilis Logarithmorum.
Page 193 - If the errors be alike, ie both too much, or both too little, take their difference for a divisor, and the difference of the products for a dividend: but if the errors be unlike, take their sum for a divisor, and the sum of the products for a dividend. PROOF. As in Single Position
Page 237 - If $ be significator, the querent is in danger by fire, lightning, or infectious fevers ; it has been said in this case, with great truth, " he has the favour of kings and princes...
Page 212 - ... the affliction of the Moon and Venus, without doubt the native will never marry. 5. The Moon in Scorpio, in square of Saturn, and he in Leo or Taurus; Moon combust of the Sun, and in square or opposition of Saturn, if she is in Capricorn, Aquarius, or Libra, the native never marries. 6. The square or opposition of Venus and Saturn helps much to a single life ; the Moon as well as Venus being in a barren sign and cadent house, and some of the other significators rather unhappily placed in bad...
Page 287 - A little circle whose centre is in the circumference of a greater...
Page 213 - Besides this, observe the motion of the significators, for if they be direct and swift in motion, they declare marriage in youth; but if they be retrograde, slow in motion, or stationary, they prolong the time.
Page 25 - When the latitudes are both of the same name, that is, both North or both South, subtract the less from the greater, and the remainder will be the difference of latitude. But when one is North, and the other South, their sum will be the difference of latitude.
Page 14 - Whatever might be the inducement, however, Napier published his invention in 1614, under the title of " Logarithmorum Canonis Descriptio," &c. containing the construction and canon of his logarithms, which are those of the kind that is called hyperbolic. This work coming presently to the hands of...

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