# Orton's Lightning Calculator and Accountant's Assistant

H. D. Orton & Company, 1871 - 186 pages
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### Contents

 Section 1 5 Section 2 6 Section 3 9 Section 4 20 Section 5 45 Section 6 48
 Section 7 51 Section 8 54 Section 9 67 Section 10 98 Section 11 155

### Popular passages

Page 183 - OF TIME. 60 Seconds = 1 Minute 60 Minutes «= 1 Hour 24 Hours => 1 Day 7 Days = 1 Week 28 Days =• 1 Lunar Month...
Page 80 - 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...
Page 149 - ... 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?
Page 182 - 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
Page 95 - To find the interest of any sum at 6 per cent, per annum for any number of months and days.
Page 132 - ... broad; what length must a ladder be to reach from the outside of the ditch to the top of the castle?
Page 87 - 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.
Page 137 - 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...
Page 49 - 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.
Page 64 - ... 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...