OF ANIMAL MOTION. GJ3 



the brightness of fancy is quenched, and the 

 " thoughts that wander through eternity," are lost 

 in the night of death. 



What then would be the effect of immersing 

 the human body in a bath of mercury, at the 

 temperature of 30 below 0? One spasmodic 

 effort would close the scene, and there would 

 not be a drop of living blood in the system. 

 Where then would be " the vital spark of 

 heavenly flame" the Archeus of Paracelsus, the 

 animal spirits of Descartes and others, the pneu- 

 matical body of Bacon, the cether of Newton, 

 the anirna of Stahl, the nervous fluid of Willis, 

 Baglivi, Hoffman, and Cullen, the irritability of 

 Glisson, the vis insita and vis nervosa of Haller, 

 the materia vitce of John Hunter, the vis vitce 

 of Goertner, the excitability of Brown, the nisus 

 formativus of Blumenbach, the sensor ial power of 

 Darwin, the organic spirit of Pring, the con- 

 servative principle of Blane, and the vis medica- 

 trix natures of so many authors ? Would this sud- 

 den loss of motion, sensation, and intelligence, be 

 owing to the abstraction of some unknown hyper- 

 physical entity, or of that spiritual fire which 

 actuates the universe ? 



Warms in the sun, refreshes in the breeze, 

 Glows in the stars, and blossoms in the trees ! 



If then it be true, that the quantity of life 

 throughout the earth be in proportion to the 

 heating power of the sun, what, I repeat, is the 



