Transcriber's Note:
Page iii, "advice" changed to "advise" (as will advise the reader)
Page iii, "advise" changed to "advice" (if our advice is followed)
Page iv, "5" changed to "iii" to match actual location of Introduction in text.
Page 17, word "do" added to text (know what to do)
Page 25, "Perfec" changed to "Perfect" (Perfect cleanliness in)
Page 29, "use" changed to "uses" (correspondent uses improper)
Page 30, "do" changed to "don't" (don't make him feel)
Page 30, "to" changed to "from" (from every man of)