264 ESSAYS ann OBSERVATIONS 
obferve this ftinging mettle for a few mi- 
nutes, in almoft any of the fummer months, 
if the fun fhines, efpecially before noon, but 
he muft fee many little clouds of duft, thrown 
with a fort of explofion out of the burfting 
apices, which foon difperfe and fall down. 
This, however, being a fingle inftance, and 
by me not obferved in fpinacia, mercurialis, 
cannabis, or any fuch barren plant ; no gene- 
ral conclufion can be drawn from it. 
42. ARG. g. “ Nono, Syngenefia fruftranea. 
«¢ Flores compofiti variis modis fabricati funt. 
‘¢ __ Polygamia frufiranea foeminis exfultat 
‘* maritatis, totam difcum occupantibus; flof- 
© culi vero foeminei radium conftituentes, ob 
« defectum ftigmatis, abundante licet difci 
“‘ pulvere, familiam propagare nequeunt,” 
Weablbom (0). omit the reft, fince Linnaeus 
(p) fays only, “ fyngenefia fruftranea: ubi 
“¢ ftigma deeft, ibi nulla foecundatio: in ra- 
_-& dio centaureae, helianthi, rudbeckiae, coreo- 
*< pfidis.” But, in the radius or corona of all 
thefe flowers, the /fy/us is alfo wanting, as 
well as the /gma; which may be many 
| ways 
(¢) Amaen. Acad. 1. p. 96. 
(7) Phil. Bot. p. 92. 
