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Geodaesia improved; or, a new and correct method of surveying made exceeding easy in two parts : part I. Teacheth to measure, divide, and delineate, any quantity of land both accessible and inaccessible, whether meadows, pasture, fields, woods, water, commons, forests, manors, &c. by the chain only, whose dimensions are cast up by the pen, and consequently freed from the errors of estimation that unavoidably attend the scale and protractor. With necessary directions to map elegantly : part II. Introduces instruments, trigonometry, preparative remarks on the earth's superficies; and teacheth the invaluable method of casting up the dimensions of instruments by the pen several ways, all agreeing, &c. &c. : with a most useful appendix concerning the practical methods of measuring timber, hay'marl pits, bricklayers and plasterers work... / A. Burn
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350 APPENDIX.

which you arc to multiply, the mean area to find the solidity.

Example 2. Let fig. 9, plate 5, represent a large hay reek, thelength whereof is 20 yards, and the other dimensions as under-neath, how many (olid yards are contained therein?Dimensions.

Bottom part of eafi end. yds.Breadth C L at bulge 5.1 c? _Breadth P q at bottom 4.60 5Height M N 1 qo

Top part of eaji end.

Breadth at bulge

5 - 10

5 -°

Breadths, each a yard

4.90

higher than the other

3 30

2.60

Breadth at the top

1.30

6)

22 20

Mean breadth

3-7

Height N O

LL

Bottom part oj voejt end.

Breadth at bulge 4.60

Breadth at bottom 4.0

Height 1.60

Top part oj uuejl end.

Breadth at bulge

4 60

4.26

Breadths, each a yard

382

higher than the other

2.18

1.64

5 )

16 50

Mean breadth

3 3

Height

4.0

9.70

half for a meanheight

4 -8s>

43 «S

489

Area of bottom part of east end 9.11s

Mean breadth of top part 3.7height 4.;

TiJ

148

Area of top part of cast endArea of bottom part of east endArea of the east end

8.S

half for a meanheight

1 6.6s

9 * S

* 5 - 8 «S

4 31.6

Is8

43

Area of bottom part of west end 6.88Mean breadth of top part z-zheight 4

Area of top part of -

west end 13.x

Area of the west endArea of the cast end

Mean area

Length

Solidity

20

458.16

ao 0815.86s

10040

11048

16064

4016

519 36910 ( 11.78

4

4 ») "9

84

447 ) 3I3<S3'»S

10.08

ajjjtfj

3)ar7aS

11.908

mean.

4548) 4079136384

,4408

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