40 



more 'than a tenth of an inch long, already provided" 

 with its eye. Under this at some distance, the first 

 lineaments of the lip appear. In a third snail arise 

 three horns, two of which are of their natural length, 

 \vhile the third is but just above the skin. Some shew 

 nothing but the trunk, without any sign of repro- 

 duction, although the head was taken off at the same 

 time with .that of the others, from which are come 

 forth such a number and variety of organs ; on the 

 contrary, in some snails, there is no difference be. 

 tween the old and the new head, only there is an ash- 

 coloured line, pointing out exactly where the head 

 \vas cut off. 



That Earth-worms feed upon earth, will be put 

 beyond dispute,, if ^ny one is at the pains to examine 

 the little curled heaps of dung, which are ejected 

 out of their holes. But it is in all probability, not 

 pure earth, but such as is made of leaves, roots, and 

 plants, when gradually rotted and mouldered away. 

 And what makes this the more probable is, that they 

 are observed to drag the leaves of trees into their 

 tales* 



8. Both the whoje Tape. worm, and every part of 

 it seems to be a complete animal. In every joint there 

 is a mouth lor receiving food, and doubtless organs 

 for digesting it. Single joints, as well as larger pieces, 

 arc frequently voided alive. All these pieces 

 arc almost equally turgid with chyle. Now it is 

 not probable, that a single worm, should in voiding, 

 be broke in so many pieces, and had it been done 

 sometime before, they would bo emaciated. There 

 seems then to be an analogy between this jointed 

 worm and knotted grass, each joint of which is a 

 complete plant, and propagates itself. It is indeed a 

 zoophyton, a plant. animal, bred in ar.inral bodies, 

 since so large and frequent detrun cations, do not 



destroy the life of it. 



t, 



9. Not only vegetables and animals have their, re- 

 spective insects^ to which they afford food as well as 



