158 KEW: THE FACULTY OF FUOD-FINDING IN GASTROPODS. 
snails, has mentioned that as soon as raw beef or mutton is put into 
the house in which a colony of AHyadlinia draparnaldi is living 
into the pans in which snails which feed more generally on plants 
are kept, she tells me, the creatures will always ‘ forsake cabbage or 
wild herbage at once and crowd to the lettuce.’ Dr. Baudon, who 
placed a piece of raw mutton of the size of a hazel-nut under a bell- 
glass in which he kept a large number of glass-shells ( Vitrina 
pellucida), observed that in less than five minutes those in the 
immediate vicinity quitted the leaves on which they were then 
feeding, and from all quarters they were seen marching on, so that 
the mutton became a general rendezvous. One which was feeding 
upon the remains of a cellar-snail (/yadinia cellaria), it is said, 
‘abandoned its victim to satisfy the craving of a newly acquired taste.’ ” 
Mr. W. A. Lloyd, in 1865, mentioned that netted dog-whelks 
(Nassa reticulata) which he kept in a shallow tank usually remained 
buried in the sand quite out of sight; but if a piece of oyster, 
mussel, or meat were drawn over the sand, or even if it were 
touched ever so lightly with the feeding forceps, the points of which 
smelt of food, the creatures would appear above the surface in a few 
placed in the tanks, and these in a few minutes became completely 
covered with the molluscs. It was impossible, in fact, to introduce 
any animal substance, living or dead, into the tank ‘without these 
whelks smelling it, and coming up to see what is to be got.” 
Slugs, etc., it is well known, when they discover favourite food 
will often return to it many times. ‘Che regular return of slugs at 
night from their hiding-places, ‘often at the opposite end of the 
house,’ to feed upon the flowers of orchids has already been referred 
to. Mr. Sherriff Tye, as he informs me, has observed that in green- 
houses’slugs will return to the same place to feed night after night ; 
a slug or slugs, for instance, which he was never able to catch, and 
which probably retired to a safe hiding-place behind the greenhouse 
flue (only used in winter), ‘nightly ravaged about the fronds of 
maiden-hair ferns (Adiantum cuneatum), five pots, for four eye 
The return of slugs many times to feed on the colouring m atter 
some book-covers in a London publishing house is clearly diene 
1 F. M. Hele, ‘ Science Gossip,’ xx. (1884), 115. 
2 Baudon, ‘ _ des Moll. de I'Oise,’ 1862, as quoted by Tate, ‘Land and Freshwater 
Mollusks,’ 1866, 
3 W. A. Lloyd, ‘Science Gossip,” 1865, 259-50. 
peer Ne 
Naturalist, 
