Understand that this piece was written before 1920 and I was interested in the subject as historical information about a drug problem that seems prevalent and current. However, the composition was on par with what I would consider a high school freshman essay. The book can not even be referenced as a source because none of it is original data, just the equivalent of a high school paper bibliography citations. There is nothing new here that can not be independently researched and, again, the composition was undeveloped and unsophisticated. It was difficult to read and follow and I found myself just plodding to get through it with the purpose of providing a review for other readers! Not worth the download.