This book, in most of it's interesting writings, is out of date. That is to say, people could, if they wanted to, comply with instructions as written in this Grimoire but most prefer to use something slightly less gruesome and unusual today - or they do in my limited experience. Having said this I still found it extremely interesting to read of the lengths a Magus was prepared to go to in order to achieve the end they required.
This is definitely NOT a read for the faint of heart and nor is it for the thrill seekers found in the world today.