<p>I shall be grateful to any Reader of this book who will point out any mistakes or misprints he may happen to notice in it, or any passage which he thinks is not clearly expressed.<br><br>I have a quantity of MS. in hand for Parts II and III, and hope to be able??should life, and health, and opportunity, be granted to me, to publish them in the course of the next few years. Their contents will be as follows:?<br><br>PART II. ADVANCED.<br><br>Fu...