SLUGS AND SNAILS. 273 



by their slime, and in no ways affected. Agaia, we must note 

 they only come out at dusk, or after rain, or in damp weather ; 

 evening and early morning are then the times to attack them, 

 and more especially so iu dry weather. Salt is the most suc- 

 cessful substance, especially if mixed with soot. 



Both Snails and Slugs have many natural enemies, such as 

 ducks, fowls, rooks, starlings; blackbirds, and thrushes. The 

 last two are of great assistance in keeping down an excess 

 of Helices. Moles, shrews, and toads also eat them. 



