32 M()U.U8CA, 



ir wv {\vHv^n tlio A({UHrium to ho of any sorvico 

 to us in the ohsrrvution of its o(>ut(Mits, this L;'rowth 

 must Ih^ ^'ot rid of, or wo might us woll hnvo u 

 vosHol wirli o|)H(HU> siilos, lloico thou wo bring in 

 tlio aid of tho ^oriwiukh^, which may bo bought 

 alivo of any l^nidou lishiuougtn*, ludt-a-piut for a 

 |HMUiy. Kxolusivoly a vogotabh'-oator, ho dolighta 

 in tho groiui Ht^a-winnl, and nothing vm\ h(^ moro 

 ot>ngonial to his pahito than thost^ tondor suocvdoiit 

 growths, Tho litth^ YoUow Winklo, so abuvidaiit 

 on weody rooks, possossea a 8imiU\r appotite ; but 

 ho is U^ss suitablo for tho sorvico rtHjuirtHt, iuasiniioli 

 as his oonstitution appoars unahhN to bt^ar constant 

 suhniorsion ; his hahit is to livo a good th'al ox- 

 posotl to tho air, and ovoi\ to tho hot sun, and this 

 soonis ossontial to his hoalth. I liavo foiuul that if 

 this litth^ soooios bo ooUoottnl, pwtty as tho indivi- 

 (hials aro, tlioy orawl annuul thi^ sidos for a day or 

 two, as if sooking a inoro gonial dwoUing, and thon 

 (mo by ono fall to tho ()ottoni and dio. Thoro 

 is, hovvxnor, another gonus t)f I) nival vo Mt>llusoa 

 which may bo niado oipudly available with tho 

 IVriwinklo, if indood it be not superior for the 

 ]>ur}>oso. I alludo to thos^o ovonly conical sholla, 

 which l>oh>ng to tho gvnus Trwhuny soniotimos 

 called from theii' form, Tops, 'IVo species, T. 

 (Htm'ariuit and T, Hmfnitvatuny iwv scai-ctdy loss 

 abundant on our woody shores than tlio IVri- 

 winkles; the former of a dull pur[>lish-git>y, 

 nuu'ked with olose-set zigzag linos ; the latter 

 rather tlattor, usually wmn at tho summit, of a dull 

 (>liv(> or griHMi, with narrow reddish bands radiating 

 from (he centw. lioth arv> pearly in the interior, 

 but the latter species is brilliantly irridescent. 



Those Tops and the connaon 1 oriwinkle mx) very 



