The water in which the preceding animals dwelt was enlivened by the jumps of the _Halteria_, a little globe surrounded by long fine cilia, with which its movements were effected; and its companion was the _Aspidisca lynceus_, an oval animalcule, having a distinct cilia or _lorica_, and furnished, in addition to cilia, with bristles, which enable it to walk and climb as well as swim. There were also some eggs of rotifers attached to the water plants, in which motion could be descried at intervals, and a little red eye observed. These eggs are always large in proportion to the creatures that lay them, and if they escape being devoured by enemies, may be watched until their contents step forth. In this, as in other months, omission is made of creatures that have already come under notice, or our list would assume larger dimensions. CHAPTER VII. JUNE AND JULY. Lindia Torulosa--OEcistes Crystallinus--A professor of deportment on stilts--Philodina--Changes of form and habits--Structure of Gizzard in Philodina family--Mr. Gosse's description--Motions of Rotifers--Indications of a will--Remarks on the motions of lower creatures--Various theories--Possibility of reason--Reflex actions Brain of insects--Consensual actions--Applications of physiological reasoning to the movements of Rotifers and Animalcules. A Pressure of other occupations prevented full use being made of June and July, nor was the weather at all propitious. For this reason the microscopic doings of these two months are recorded in one chapter. As usual the Kentish Town ponds were productive of objects, and among them were several rotifers not found in the previous months. The first of these was a very small worm-like thing, with one eye, a tuft of cilia about the mouth, and two toes at the tail end. Had it not been for the jaws, which were working like fingers thrust against each other, and which were unmistakably of the rotifer pattern, the animal might have been supposed to belong to some other class. According to the 'Micrographic Dictionary,' the _Lindia torulosa_ is 1--75" long, but this specimen was only about 1--200". It was possibly very young, and did not thrust out its cilia in two distinct tufts, as Cohn describes, although it may have had the power of doing so. At times it sprang quickly backwards and forwards, bringing its head where its tail was before. This object required for its comfortable elucidation a power of about six hundred linear. [Illustration: OEcistes crystallinus.]