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 Park, 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-, 

 3 in. 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^y^. 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 

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

 by using only the two ends, the drills will be 1 8 in. apart. 



