On the Culture of Turmps. 53 



It precipitates iron, emetic, copper, lead, and infusion of 

 tan, all in yellow. 



This bark differs, as we see, from several cinchonas and 

 other substances examined by comparison, in so far as it 

 does not precipitate animal girlatine : it has no astringent 

 taste, and yet it has an extremely bitter one. There is reason 

 to believe that the principle which in this substance preci- 

 pitates the metallic solutions is not entirely similar to that 

 of the cinchonas, at least the colour of the precipitates 

 which it furnishes is very different. Nevertheless, according 

 to these properties, the bark of the angustura may be a very 

 good febrifuge. 



[To be continued.] 



\T. On the Culture of Turnips hj the Drill and hj ike 

 Broad-cast Method, shoiving the Superiority of the for- 

 mer. 'By Charles Layton, Esq., of Recdham Hallf 

 No? folk *. 



SIR, 



X BEG leave to send you an account of an experiment on 

 the comparative culture of turnips^ and have the honour 



to be 



Your very humble servant, 



Charles Layton. 

 To Dr. C. Taylor, 

 Secretary to the Society of Arts, &c. 



Being desirous of ascertaining, by experiment, the best 

 mode of cultivating turnips, I prepared, in 1805, 20 statute 

 acres of land well calculated for such trial. The whole spot 

 was level, and the soil similar in every part. By manuring 

 it equally with ten cart loads per acre of rotten farm-yard 

 dung, after it had been properly summer tilled, it was fit, 

 by-the eith of June, for the reception of the seed. In order 



• From Tra/uaitioHS of ihe Society of Arts, &c. vol. xxiv.— The silver medal 

 of the Society w.is granted to Mr. L:iyton for this comnuiuication. 



D 3 to 



