92 ANIMALCULA OF INFUSIONS, I. 



drew others from the fnow, fome entire, and 

 others deprived of blood ; they appeared motion- 

 lefs, and as if frozen. All were replaced in the 

 fnow, and in a few hours removed to a warm 

 fituation. I attentively confidered what happen- 

 ed. By degrees, the contratted ones ftretched, 

 their eyes opened, they fhook themfelves, began 

 to leap and efcape. Being again configned to 

 the fnow, and taken out after a certain interval, 

 all exhibited the fame phenomena. There was not 

 the fmallefl: difference at whatever feafon the 

 experiments were made. I found a remarkable 

 correfpondence between tree frogs, toads, and 

 water newts : the whole became lethargic in the 

 fame manner, by the cold of fnow,— and returned 

 to their former animation when removed from 

 it. 



The coincidence of thefe fads obliges me to 

 fay, that the failure of fenfe and motion does not 

 arife from refrigeration of the blood, for it can- 

 not take place where there is none, nor from the 

 relaxed circulation of this fluid, but depends 

 entirely on the folids, which, being powerfully 

 attacked by cold, are in a condition very different 

 from the natural flate. What the new condi- 

 tion is, may be difcovered from the phenomena 

 of lethargic animals. They appear contraded, 

 the mufcles have no longer their natural foftnefs 

 and pliancy, but become hard and withered. 



Thus 



