[ $ 3 



moiflure from the air, from rain ? 

 and from dew; for it has been 

 found a confiderable advantage to 

 the growth of a tree, to w T ater the 

 Item and the leaves now and then. 

 But I leave the difcuflion of thofe 

 articles to others, who have made 

 thefe considerations an ohje££ of 

 their purfuits. The late Mr. Baker 

 has publiihed to the world his mi- 

 crofcopical obfervations on the fub- 

 ject. Mr. Bonnet, of Geneva, has 

 publifhed a very elaborate work 

 Upon the fame, intitled, Recbercbes 

 fur Pufage des Fueilles dans les Plant es y 

 et fur quelques autres Sujets relatif a 

 PHiftoire de la Vegetation*) par Charles 

 Bonnet, a Gottingen et Leiden, 

 1754. This work contains a great 

 deal of interefcing inquiries upon 

 the nature, properties, and utilities 

 of thofe wonderful organs; ail which 

 B % have 



