In Starry Realms

In starry realms - I908 - preface to the original edition – the contents of this little volume have within the last few years seen the light in various periodicals. There is not in the whole range of modem science a more fruitful subject for discussion than the sun and his connection with the earth. In the first place it is the function of the sun's attracting power to constrain the earth to follow that orbit in which she performs her annual revolution.