Oh diJlhigulpAng mixed Metals hy the SiHcIL 1$^ 



forwardcft; and in the courfe of the day the others of lota 

 I, 2, and 3, appeared. On the i6tli they all looked finely; 

 but thofe of lot i were largell, and thofe of lot 2 larger than 

 lot 3 : thofe of lot 4, which were kept watered with plain 

 water, did not come up till the iBth, or perhaps one of them 

 on the evening of the 17th. On June 5 they were all nearly 

 fullv crown ; but thofe of No. i were conliderably ftunted, 

 and thofe of lot s fomewhat fo^ and neither of them were fo 

 fine as thofe of lots 3 and 4. 



In the latter end of fpring and beginning of fummer I tried 

 the fame experiments on fome other plants, but, from not 

 being conftantly at home, could not make them with fuffi- 

 cient aceuraev ; however, enou'ih fo to determine that thofe 

 moillened with dilute oxvmuriatic acid came up firft. 



In the experiment on the beans, we find that thofe foaked 

 and moidened with the dilute acid came up fome days before 

 thofe that were only watered in the common way, and that 

 thofe which had the moft acid at firlt were the forwardcft, 

 and apparently moll tlourifhing plants, though altcrwards 

 they the moft rapidly dechned ; and therefore I conclude 

 (though more experiments are wanting on this fubjeft pofi- 

 tively to determine), ift. That the diluted oxvmuriatic acid 

 snly in a certain temperature hath the efted: of promoting 

 an earlier germination of feeds than would otherwifc take 

 place : and, ad, From the plants at firft growing more rapidly 

 than thofe watered in the common wav, but afterwards de- 

 clining fo as to be furpafled by them, that the oxvmuriatic 

 acid pofl'eifes no nutritive quality, but a6ts merely as a lli- 

 mulus, and therefore cannot be applied advantageoufty to the 

 purpofes of horticulture. I am very truly and refpetStfuUy 



Thy fincere Friend, 



L, W. DlLLWYN-. 



XXVIT. Ohfervations on the Quejlion, ichethcr mixed Mctah 

 can he d\jl'inguijhed by the StneU. By M. Bcettiger*. 



W ERNERf, Wiedemann, and other chemifts, place 

 fmell among the external charafters of foffils. They divide 

 minerals into odorous and inodorous, and make the lirft clafs 

 to confift of fwinc's ftone, fome other earthy biturricns, and 

 fulphurcous and arfenical pyrites, which when rubbed or 



* This paper firft appeared in tlie CcrmaH M vrury, pnbliflitd by Wie-. 

 land, March iSoo: it was afterwards inferred in the Mugajln Encyclo- 

 fediqiie. No. lo, an. lo, from which we have tr.mflattd it. 



t Slip Ics CuradlifCi cxtcrieurs dts Foirdcs, § 204, p. joSo. Len?: 

 torn, i. p, 19. 



ftruck 



