CIVK; rUOIlLEMS IMOLATINd 1 ( ) MoI.H SKS 28:] 



'I'll*' e(lil)l<^ snail (Ilili.r //oniatla) is iini»()rte«l from Kiii«i|m' and is 

 raised in specially fenced j(ardens and fattened fur niark«'t. This may 



Fig. 130. A common land snail 



be stndied as an interesting novelty in nii>st American commnnitics. 

 For all we know, nmy not our big, fat garden slugs be food delicacies? 



Compare garden slugs with marine or fresh-water snails, which they 

 may be seen to resemble, except in respect 

 to the rudimentary shell. These slugs are 

 often as destructive in gardens as any in- 

 sect, and, 1)eing nocturnal, are little known. 

 Collect the eggs (translucent, yellowish, 

 about the size of buckshot, in masses of 

 thirty or more, found in damp }>laces nnder 

 boards) and keep them in a glass jar or 

 aquarium to watch their development. If 

 the life history of these pests were better 

 known, we might control them more effec- 

 tively abont our gardens and greenhouses. 



In connection with other field work, 

 make a collection of common marine, 

 fresh-water, and terrestrial gastroi>ods. 

 Keep them in suitable acpiaria or \ i\aria, 

 to study habits and foods. Note that som<' 

 snails are 'Meft-hande<l " and most arr 

 "right-handed." (If held with t>pening uj* 

 and spii-c pointing away from you, tlie 



dextral shells have the opening to the right, tin- sinistral, to tiie left.) 

 The commonest and most interesting arc tin* pond snails, belonging 

 to the genus PJi//s<i, which can be readily distinguished by their sinistral 



Kn..l.'51. C'oimuon snails, 

 sinistral and dextral 



