Description of a Garden Hand-Drill. 28S 



(like myself) who wishes to attain a knowledge of the natural 

 system. Mr. Sweet's Hortus Britannicus does not number 

 the genera in each order ; but any young gardener may do 

 that in his own catalogue, until such time as some catalogue 

 is published where the genera are numbered. 



The other tallies {Jigs. 45, 46, 47.) have only the botanic 

 name and the natural order to which they belong. But as you 

 are more able than myself to discern and discuss the advan- 

 tages and disadvantages of each of them, I shall say no more, 

 but leave their merits to your decision. 



I am, Sir, yours, &c. 

 Brasted ParJc, April 2. 1830. J. Pringle. 



Art. VII. Description of a Garden Hand-Drill. By A. H. 



Sir, 



I HEREWITH send you a drawing of a small hand-drill of 

 my invention, which I find extremely useful for sowing onions, 

 carrots, &c. 



A B is a piece of well seasoned wood about 21 in. lono-, 

 Sin. wide, and three fourths of an inch thick; abed 

 are four pieces of wrought-iron plate about one eighth of 

 an inch thick, and sharpened at the end. The two centre 

 ones {b c) are movable, being retained in their places by two 

 large-headed screws {e e) with nuts on the opposite side. All 

 the plates are let into the wood exactly their thickness. 



It is plain that by using the tool as represented in Jig. 48. 

 four drills may be drawn at once, 6 in. apart. If the two cen- 



tre plates be removed, and one of them put into the middle 

 (/), then the tool will make three drills 9 in, apart. Lastly, 

 by using only the two ends, the drills will be 18 in. apart. 



