Slugs have been known to make their way into bee-hives, presumably for the sake of the honey.[73] ‘Sugaring’ the trees at night for moths will often attract a surprising concourse of slugs. Sometimes a particular plant in a greenhouse will become the object of the slugs’ persistent attacks, and they will neglect every other food in order to obtain it. _Farfugium grande_ is one of these favourite foods, “the young leaves and shoots being always eaten in preference to all other plants growing in the houses; where no _Farfugiums_ were kept the slugs nibbled indiscriminately at many kinds.”[74] The flowers of orchidaceous plants exercise a special attraction over slugs, which appear to have some means of discovering when the plants are in bloom. “I have often observed,” says Mr. T. Baines, “that a slug will travel over the surface of a pot in which is growing a _Dendrobium nobile_, a _Cattleya_, _Vanda_, or similar upright plant for a score of times without ever attempting to ascend into the head of the plant unless it is in bloom, in which case they are certain to find their way straight to the flowers; after which they will descend, and return to some favourite hiding-place, often at the opposite end of the house.”[75] Mr. R. Warner has “actually seen many little slugs suspending themselves by slime-threads from the rafters and descending on the spikes of the beautiful _Odontoglossum alexandrae_; and thus many spikes, thickly wadded round with cotton wool (which the slugs could not travel over), and growing in pots surrounded by water, had been lost.”[76] Perhaps the most singular instance of a liking for a particular food is that related by Mr. E. Step.[77] In a London publishing house, slugs were observed, during a period of nearly twelve months, to have fed almost nightly on the colouring matter in certain bookcovers, and though the trails were often seen over the shelves, and cabbage and lettuce leaves laid down to tempt the creatures, they continued their depredations with impunity for the time above mentioned. _Limnaea peregra_ has been observed feeding on old fish-heads thrown into a dirty stream, and a large gathering of _Limnaea stagnalis_ has been noticed feeding upon an old newspaper in a pond on Chislehurst Common, ‘so that for the space of about a square foot nothing else could be seen.’[78] =Tenacity of Life.=--Land Mollusca have been known to exhibit, under unusual conditions, remarkable tenacity of life. Some of the most noteworthy and best authenticated instances of this faculty may be here mentioned.