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flialcules of that colour, but fome few of them had no red colour 

 in them, efpecially the fmaller ones, which probably had not been 

 long brought forth from the parent. 



On the fame day the weather was very hot, and, in the afternoon, 

 I took a fmall part of the fediment from the gutter which was now 

 quite dry, and I faw the furface of it completely red, by reafon of 

 the great number of red Animalcules in it, being many more than 

 the green ones ; but I could not diliinguifla them until 1 had moifl- 

 ened the fubftance with fome rain water. 



The following day the Iky was again very hot and dry, and, about 

 nine in the morning, I took fome of the fediment which had been 

 in the leaden gutter, which was then quite dried, and no thicker 

 than half the back of a knife ; it had alfo lain from the preceding 

 evening in my lludy ; this I put into a glafs tube, about the thicknefs 

 of a fwan's quill, and poured on it a fmall quantity of rain water 

 taken out of my ftone cittern, in which water were fwimming fome 

 of the before mentioned Animalcules of the fmaller fort ; having 

 poured in this water, I mixed it up with the dry fediment or matter 

 put into the tube, and which feemed very hard and compadl, in or- 

 der to dtirolve the fame ; that thus, if there were Itill any living 

 Animalcules in it, they might illue forth ; though I confefs I never 

 thought that there could be any living creature in a fubftance fo 

 dried as this was. 



I was, however, miftaken ; for fcarce an hour had elapfed, when 

 I faw, at leart, an hundred of the Animalcules before dcfcribcd; fome 

 of them adhering to the glafs, fome creeping along upon it, and 

 fome fwimming about. In the evening I computed there were 

 more than three hundred of the fame kind of Animalcules, but the 

 moft of them were not of full fize, as I judged by their bodies be- 

 ing fo minute, and fo empty of food, as if they were newly born ; 

 and in the bodies of fome of the larger ones, I could fee two, in 

 others three, young ones, folded double : thefe young ones, when 



Vol. II. D d 



