Tracts on the nature of animals and vegetables / by Lazaro Spallanzani.
- Spallanzani, Lazzaro, 1729-1799. Dissertazioni di fisica animale, e vegetabile
- Date:
- 1799
Licence: Public Domain Mark
Credit: Tracts on the nature of animals and vegetables / by Lazaro Spallanzani. Source: Wellcome Collection.
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![fufions are much more populous than the win- ter. beeen vo era pevermerentamnmed OE 5 ———t ee CHAP. IX. Severau kinds of animalcula are viviparous and oviparous. One of the oviparous kinds is found in rice infufions. The fize is of the- largeft among animalcula. The figure refem- bles a kidney bean, except that one extremity is‘curved like a pointed hook or beak; PI. 1. fig. g. O. I ifolated one of thofe animalcula in a watch-glafs, along with a {mall portion of infufion, which, for fecurity, had been boiled along time. In feven hours, the animalcule had a companion, fo like itfelf, that it was impoffible to diftinguifh them. I had no rea- fon to believe it came from without, or was produced by the infufion. Half an hour after, I vifited the glafs, and difcovered fomething new; that is, two minute fpheres at the bot- tom of the glafs, one of which was oblong ; P]. 1. fig. 9. P. It moved itfelf feveral times, and changed its place. The alternate motion and reft continued an hour and a third; then became quicker, and entirely local. . The fphere begun to fwim flowly in the fluid ; and, in a fhort time, the quicknefs of the fmalleft equalled](https://iiif.wellcomecollection.org/image/b33085572_0075.jp2/full/800%2C/0/default.jpg)
