PHYSICAL AND LITERARY, zsi 



bis, &c., I know no way, to determine 

 the queftion fo certainly, as by training 

 up one or more of thefe feed-beariag 

 plants, at a fufficient diftance from fuch 

 as carry the flowers, and oblerving the 

 confequence : For, 



17, If a feed-bearing or female fpina- 

 cia, mercurialis, or cannabis, (landing at 

 a diftance from any of the flowering or 

 male plants, can produce fertile feeds ; 

 then the influence of their duft is not ne- 

 ceflary to the fertility of thefe feeds : But, 

 ** foemellam fpinaciae, mercurialis, caa- 

 " nabis, abfque vicini maris contagio 

 " excultam, femina foecunda producers 

 " vidit Camerarius ;" ergo, the duft of 

 the apices is not neceflary to the foecun- 

 dity of all feeds. Although this te imo- 

 ny of Camerarius is beyond all exception; 

 yet, in confirmation of it, and to prevent 

 cavilling, I fliall relate the experiments I 

 made with the fame planes. 



I. In the Spring 1-37, 1 tranfplanted 

 three fets of the common fpinage, long 

 before it could be known whether they 

 were flowering or feed-bearing plants, 



from 



