184 ELEMENTS OF SCIENCE 



those which enter into the composition of even the 

 most distinct stellar bodies. Thus the action of gravity 

 and the energies known as light, heat, motion and 

 chemical action, as also, doubtless, those activities termed 

 electric and magnetic, seem to be diffused throughout 

 the visible universe. The same is doubtless the case 

 with other energies and influences, if such there be, 

 which remain, as yet, undiscovered and unknown. 



These few elementary notions with respect to the 

 heavenly bodies,- and the effects of their energies upon 

 the globe we inhabit, are all which space permits us 

 to give. For more than an introduction to such first 

 elements of science, the student must be referred to works 

 devoted to the exposition of the science of astronomy. 



