222 



Commercial Gardening 



TABLE SHOWING NUMBER OF PLANTS, AT GIVEN DISTANCES, CONTAINED 

 IN A SQUARE EOD, POLE, OR PERCH 



Inches apart. 



3x3 

 4x4 

 5x4 

 6x4 

 6x6 

 8x6 



No. of Plants. 

 612 

 490 

 392 

 272 

 261 



By multiplying the number of plants to a square rod by 160 the number 

 per acre is obtained. 



TABLE SHOWING NUMBER OF PLANTS CONTAINED IN 1 ACRE OK 

 LAND AT DIFFERENT DISTANCES APART 



Inches apart. 

 30 X 12 

 30 X 18 

 30 X 24 



No. of Plants. 



17,424 



11,616 



8,712 



Inches apart. 



30 x 30 

 30 x 36 

 30 x 42 



No. of Plants. 

 , 6,969 



, 5,808 

 4,978 



The Rectangle. If it is desired to lay out an acre of ground in the 

 form of a rectangle, the area is divided by the length of one side to ascertain 

 the other. Thus an acre of land = 4840 sq. yd. = 160 sq. poles = 10 sq. 

 chains. A rectangle may be obtained by having sides 88 yd. x 55 yd., 

 by 16 poles x 10 poles, or by 5 chains x 2 chains. 



If the length of a rectangle is to be a certain number of times the 

 width, the following rule will serve: Divide the area by the ratio of length 

 to the width, and the square root of the quotient will be the shorter side 

 required; whence the longer is also known. If it is desired to lay out 

 30 ac. in the form of a rectangle three times as long as broad, proceed 



thus: 30 ac. = 300 sq. chains. Divide the ratio of length = -~- = 100 sq. 



o 



chains. Extract the square root: ^/100 = 10 chains. Then the rectangle 

 will be 10 chains wide and 30 chains long. 



The following table relating to the proportions of a circle, and its equal 

 and inscribed square, will prove useful in calculations: 



1. Diameter of a circle x -8862) 



2. Circumference of a circle x '2821 / 



3. Diameter of a circle x '70711 



4. Circumference of a circle x '2251 \ 



5. Area of a circle 



6. Side of inscribed square 



= side of an equal square. 



= side of an inscribed square. 



J diameter of a circumscribed 

 \ circle. 



J circumference of an equal 

 \ circle. 



= diameter of an equal circle. 

 J circumference of an equal 

 \ circle. 



From this table one may describe any square or circle of equal dimensions. 



7. 

 8. 

 9. 



a square 



X -6366J 

 X 1-414 



X 4-443 

 X 1-128 

 X 3-545 



