Appendix. 105 



of the ever-present and ever-ready state of 

 this power is given to us, when we consider 

 that not only every substance, but almost 

 every mode of dealing with substance mani- 

 fests its presence. It is not accidental at 

 these times, but active and essentially so, 

 and we may, in our endeavors to comprehend 

 it, usefully compare and contrast it with 

 gravity which never changes. There we see 

 that power which in undisturbed and solemn 

 grandeur holds equally the world and the 

 dust of which worlds are formed together, 

 and carries them on in their course through 



o 



illimitable space through illimitable ages ; 

 and in this other power, even in this our first 

 glimpse we see probably the contrasted force 

 which is destined to give all that vivacity and 

 mutual activity to particles that shall fit them 

 as far as matter alone is concerned, for their 

 wonderful office in the phenomena of nature, 

 and enable them to bring forth the ever vary- 

 ing and astonishing changes which earth, air, 

 fire and water present to us ; from the mo- 

 tion of the dust in the whirlwind up to the 

 highest conditions of life." 



13. (Page6i.) An illustration of this form 

 of wind-production may be found in the fol- 

 lowing facts related by DR. GISLER, who for 



