# Orton's Lightning Calculator and Accountant's Assistant

H. D. Orton & Company, 1871 - 186 σελίδες

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### Περιεχόμενα

 Ενότητα 1 1 Ενότητα 2 3 Ενότητα 3 4 Ενότητα 4 20 Ενότητα 5 45 Ενότητα 6 51 Ενότητα 7 62
 Ενότητα 8 67 Ενότητα 9 98 Ενότητα 10 155 Ενότητα 11 156 Ενότητα 12 162 Ενότητα 13 173

### Δημοφιλή αποσπάσματα

Σελίδα 181 - OF TIME. 60 Seconds = 1 Minute 60 Minutes «= 1 Hour 24 Hours => 1 Day 7 Days = 1 Week 28 Days =• 1 Lunar Month...
Σελίδα 78 - Thou shalt not lend upon usury to thy brother; usury of money, usury of victuals, usury of any thing that is lent upon usury: unto a stranger thou mayest lend upon usury; but unto thy brother thou shalt not lend upon usury...
Σελίδα 147 - ... the square root of the last product will be the area of the triangle. EXAMPLE. Suppose I have a triangular fish-pond, whose three sides measure 400, 348, and 312yds; what quantity of ground does it cover?
Σελίδα 180 - The description of a forty acre lot would read : The south half of the west half of the south-west quarter of section 1 in township 24, north of range 7 west, or as the case might be ; and sometimes will fall short and sometimes overrun the number of acres it is supposed to contain. The nautical mile is 795 4-5 feet longer than the common mile. SURVEYORS
Σελίδα 93 - To find the interest of any sum at 6 per cent, per annum for any number of months and days.
Σελίδα 130 - ... broad; what length must a ladder be to reach from the outside of the ditch to the top of the castle?
Σελίδα 85 - If the time consists of years and months, reduce them to montJis, and place 12 (the number of months in a year) on the left hand side of the line. Should the time consist of months and days, reduce them to days or decimal parts of a month. If reduced to days, place 36 on the left. If to decimals parts of a month, place 12 only as before. Point off two decimal places when the time is in months, and three decimal places wlien the time is in days.
Σελίδα 135 - By repeating the operation with the root last (blind as an assumed root, we may obtain results to any degree of exactness ; one operation, however, is generally sufficient. EXAMPLES. 1. Required the cube root of 66. The cube root of 64 is 4. Now it is manifest that the cube root of 66 is a little more than 4, and by taking a similar proportion to the preceding, we have 64x2=128...
Σελίδα 47 - Multiply the diameter in inches at the small end, by one-half the number of inches, and this product by the length of the log in feet, which last product divide by 12.
Σελίδα 62 - ... of tons. An easy mode of ascertaining the value of a given number of Ibs. of hay, at a given price per ton of 2000 Ibs. RULE. — Multiply the number of pounds of hay (coal, or anything else which is bought and sold by the ton) by...