CONTENTS. 



CHAPTER I. 



HERSCHEL THE PIONEER. 



PAOE 



Influence of Herschel's work His characteristics Birth and 

 early years Emigration to England Caroline Herschel 

 Discovery of Uranus King's Astronomer Latter years 

 and death Death of Caroline Herschel 1 



CHAPTER II. 



HERSCHEL THE DISCOVERER. 



Solar researches Study of Venus Of Mars The Asteroids 

 Jupiter Saturn Discovery of satellites Uranian satel- 

 lites Cometary researches Motion of the Solar System 

 Discovery of binary stars Clusters and nebulae Nebulous 

 stars The Nebular Hypothesis Star-gauging The disc- 

 theory Subordinate clusters Abandonment of the disc- 

 theory Second method of star -gauging Estimate of 

 Herschel's work 15 



CHAPTER III. 



THE SUN. 



Schwabe and the sun-spot period Researches of Wolf, 

 Lamont, Sabine, Gautier Observations of Carrington 



