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180. If a cotton-mill can make 1200 yds. of cloth per hour, how many yards could be made by working 10 hours a day from July 7th to January 4th, allowing for 26 Sundays?

181. Change 15 lb. 8 oz. Av. to pounds and ounces Troy. 182. How many sq. ft. does the surface of a block contain, which is 3 ft. long, 2 ft. wide, and 6 ft. thick?

183. When 2 dozen grape-vines can be bought for $6.50, what is the cost of each vine?

184. From a pile of wood 58 ft. long, 4 ft. high, and 4 ft. wide, was sold at one time 33 cords, at another 2 cords. What is the remainder worth at $4 a cord?

185. I have a shed which measures on the inside 18 ft. 7 in. by 8 ft. by 10 ft. in height. How many cords of wood can be put in it?

186. A man purchased 75 cords of wood for $360; he sold the following lots, 10 cd., 15 cd., and 113 cd., all at $5 per cord. What did he gain on what he sold?

187. What would be the cost of sawing the remainder of the 75 cords, at $1 a cord?

188. How many gals. of water will be contained in a tank 3 ft. square, if the water is 4 ft. 3 in. deep?

189. At 15 cents per pound, what was the cost for lead, 5 lbs. to the sq. ft., to line the above tank, it being 5 feet deep? 190. What must I pay for a dozen silver spoons, each weighing 2 oz. 9 pwt., at $1.50 per ounce ?

191. Add of the month of February, 1876, to of the days from March 21st to June 17th, 1877.

192. How much carpeting yd. wide will cover the top and sides of a block 3 ft. long, 8 inches wide, and 6 inches high?

193. Estimate the cost of feeding a pair of oxen through the winter of 1879 and 1880, if 1 ox weighed 1772 lbs. and the other 1431 lbs., and hay was $ 13.75 per ton, and the oxen were allowed of their weight in hay each day.

194. How many paving-stones 6 in. by 8 in. will be required to pave a street 27 rods long by 50 ft. wide?

195. At 9 o'clock P. M. in Boston, what is the time in Paris?

196. If a druggist sells 1 gross 2 doz. powders a day, how many will he sell from the 19th of Dec., 1877, to 15th Mar., 1878, deducting 12 Sundays?

197. In what time will a vessel go through a strait 2 miles long, if she is carried ahead by tide 30 feet a minute, by wind 25 feet a minute, and by steam 100 feet a minute? In what time can she go through the strait against wind and tide?

396. Questions for Review.

Repeat the table of LONG MEASURE. Draw a line an inch long. Hold your hands a foot apart. What do you think the height of your school-room to be? In some convenient place mark off and walk 100 feet, counting your steps as you walk, and find their average length. By counting your steps, find how far you live from school. What is the standard unit of length?

How is an angle formed? Upon what does its size depend? What is a right angle? a rectangle? a square? area? How do you find the area of a rectangle or a square? Illustrate. Repeat the table of SQUARE MEASURES. From what are the units of square measure derived? What is the principal unit of land measure ?

What is a rectangular solid? a cube? How many faces has a cube? how many edges? How do you find the volume of any rectangular solid? Illustrate. Repeat the table of CUBIC MEASURE. From what are the units of cubic measure derived?

Repeat the table of LIQUID MEASURES; of DRY MEASURES. Which is larger, 1 quart liquid measure, or 1 quart dry measure? What is the standard unit of liquid measure? of dry measure? How many cubic inches are there in a gallon? in a bushel? How do we ascertain the WEIGHT of anything? Repeat the table of Avoirdupois weights; of Troy weights. By which would you buy iron? silver? salt? emeralds? flour? What is a long ton? How many grains Troy make a pound Avoirdupois? Which is heavier, 1 lb. Avoirdupois, or 1 lb. Troy? 1 oz. Avoirdupois, or 1 oz. Troy? What is the standard unit of weight?

What is a circle? the circumference? an arc? Repeat the table of CIRCULAR MEASURES. Are all degrees of the same length? What

is the length of a degree of the circumference of the earth at the equator? What is a nautical mile? What is its length in English miles?

How is an angle measured? Are all angles of one degree of the same size?

Repeat the table of TIME. How do you know what years are leap years? Name the months which contain 30 days each; name the months which contain 31 days each.

What is a COMPOUND NUMBER? a denominate number? a general number? How do the units of different denominations in compound numbers increase?

ING.

Give the rule for REDUCTION DESCENDING; for REDUCTION ASCENDHow do you change a denominate fraction to integers of lower denominations? How do you change integers of lower denominations to the fraction of a higher ?

How are compound numbers ADDED, SUBTRACTED, MULTIPLIED, and DIVIDED?

How do you find the number of years, months, and days between two dates? (Art. 371.) How do you find the time in days between two dates? When the difference in time between two places is given, how do you find their difference in longitude? When the difference in longitude is given, how do you find the difference in time?

Find the area of the top of your desk. Draw a square 1 inch each way; inch each way. What part of the first square is the second? Difference between 5 square inches and 5 inches square? When the length of one side of a rectangle is given in feet, and the other in rods, how do you find the surface? When the area and one dimension are given, how do you find the other?

How are the PUBLIC LANDS of the United States divided?

When the volume and two dimensions of a rectangular solid are given, how do you find the third ?

How is WOOD generally cut for market? How many cubic feet are there in cord? How would you estimate the contents of SAWED TIMBER and BOARDS? How do you find the average width of a board that decreases regularly in width from end to end?

How are bulky fruits and vegetables measured? How does a HEAPED MEASURE compare in bulk with an even measure? A cubic foot is equal to what part of a bushel, even measure? What part of a bushel, heaped measure?

[blocks in formation]

5. sq. m. sq. rd.

6. cu. yd. cu. in.

7. cd. cu. ft.

gi.

pt.

(')

hours

min.

8. gal.

9. bu.

B

lb.

lb.

10. cire.

11. c. y.

12. 1. y.

13.

14. A.

15. pk. pt.

16. (°) (")

17. oz.* gr.

18. yd. in. 19. sq. rd.

ft.

20. qt.t gi.

21. W. min.

22. sq. yd. sq. in.

23. d.

24.

25.

rd. in.

sq.

gross

sq. yd.

sec.

ft. sq. in.

units

* Troy.

397. DRILL TABLE No. 7.

с

[blocks in formation]

6 cu. yd.

92 cd.

45

4 gal.

bu.

280°

2 c.

c. y.

D

1428 lb.

2 qr.

7 oz.

3 yd.

9 sq. rd.

15 cu. ft. 1506 cu. in

6 cd. ft.

12 cu. ft.

2 qt.

1 pt.

1 pk.

2 qt.

2

7 d.

7d

20 h.

15 rd.

11 ft. 18 sq. rd. 206 sq. ft.

6 qt.

1 pt.

18°

11 oz.

5 yd.

40 sq. yd.

2 qt.

3w.

4 sq. yd.

169 d.

27

[blocks in formation]

19 h.

3 sq. rd. 204 sq. ft.

8 gross

3 doz.

+ Liquid.

6

7 lb.

10 pwt.

2 ft.

28"

18h.

5 min.

8 in.

9 sq. in

2 gi

54"

20 gr.

4 in.

9 sq. in

2 gi.

18h.

36 sq. in

42 min.

10 sq. in

9

DRILL TABLE No. 7

(continued).

7 lb.

4 cwt.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

20.

21.

23 h.

41 min.

22.

27 sq. ft.

28 sq. in.

23.

48 min.

18 sec.

24. 178 sq. ft. 108 sq. in. 25.!

1 gross

11°

Oz.

5 yd.

2 sq. rd.

E

14 cu. ft.

18 cd. ft.

3 qt.

4 pk.

98'

348 d.

8 oz.

14 pwt.

1 ft.

4 sq. yd.

329 cu. in.

14 cu. ft.

3 qr. 11

14"

1 pt. (liquid)

7 qt.

1 pt.

3 h

21h.

10 min.

2 ft.

9 in.

9 sq yd. 110 sq. in.

1 pt.

58"

23 gr.

3 in.

3 gi. (dry)

68'

22 pwt.

2 ft.

9 sq. yd. 8 sq. ft.

1 pt.

lb.

8

3gi. (liquid)

doz.

398. Exercises upon the Table.

196. Change five A to B.*

197. Change E to units of the lowest denomination in the example.

198. Change D to units of the lowest denomination in the example.

199. Change 3284 B to A.

200. Change 132687 B to units of higher denominations.

201. Change A to B.

202. Change 0.4627 A to B.

203. Change the numbers of lower denominations in D to a fraction of the highest.

204. Change the numbers of lower denominations in C to a decimal of the highest. (4 places.)

205. What part of A is E?

206. Add C, D, and E.

207. Add A to D.

208. Add 0.5784 A to E.
209. Take E from D.
210. Take D from C.
211. Multiply C by 6.
212. Multiply E by 15.

213. Divide C by 10.

214. Divide D by 7.

215. Divide D by 4 of the lowest denomination in the example.

10

* See page 57, for Explanation of the Use of the Drill Tables.

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