The purpose of this book is to assist those concerned with the easement of light. Even the simplest subjects are capable of the most exhaustive treatment and such treatment is not without its value, but though the writer and the publisher may sustain the effort needed to produce a completely comprehensive and authoritative work, the ordinary reader, con-cerned to obtain a working knowledge of the subject, is often exhausted before he has pene-trated very far.
This book docs not claim to be an exhaustive work but is designed to be read as a whole, to give a working knowledge and to indicate lines of further study for those so minded. Practically every concise statement is necessarily pregnant with exceptions and quasi-exceptions, the pursuit of which is delightful but outside our intended scope.
The Supplement contains a report of the cases Cory v. The City of London Real Property Co. referrred to in the main work.