3 ?8 Of the Turnep- Drill Chap. XXIL 



the Ends of the Spindles which come juft thro' their 

 Holes, after each of them have paiTed their Hole at 

 its refpective End of the Carriage. 



All this Carriage is made of Board full half-inch 

 thick •, The Ends C and D are made of double 

 Thicknefs by another Piece of Board added to each, 

 that covers all their Infides, except their Dove-tails. 

 Thefe Boards with which they are lin'd, are nail'd to 

 them, with their Grain going a different Way, and 

 eroding the Grain of the Board at the End, either 

 at right or oblique Angles. This prevents the Holes 

 from fplitting out, and makes the Holes of a double 

 Thicknefs ; whereby the Spindle is the lefs worn by 

 them, in cafe there are no Brafs Wreaths to enter 

 them. 



The middle Pieces E and F are lin'd by their whole 

 Surfaces, in the fame Manner as the Infides of the 

 Ends are lin'd. 



When thefe Ends and middle Pieces are in their 

 Places, a wooden Cylinder, of the exact Diameter of 

 the Holes, is thruft thro' all Four, to hold them exactly 

 true, whilft the Ends and middle Pieces are all fcrew'd 

 fait into their Places. 



The prick'd Lines are drawn all round the Carriage, 

 thro* the Centres of the Holes, and at equal Diftance 

 from the Bottom of the Carriage, which is an Inch 

 and Three quarters, and the One-eighth of an Inch. 

 This prick'd Line is a Direction how high to nail on 

 the Ledgers G and H, whereon the Box is to (land ; 

 and the Diftance the upper Surface of the Ledger 

 muft be above the prick'd Line, is the Semidiameter 

 of the Brafs Spindle; and the Thicknefs of the Brafs 

 Box above the Spindle, or which is the fame thing, 

 the Diftance between the Centre of the great Hole 

 of the Brafs Seed-box, and the Plane of the Top of 

 its Mortife, being half an Inch and half a quarter, 

 ftrike a Line above the prick'd Line parallel to it, at 

 this Diftance above, and then nail on the Ledger, 



with 



