Written in the 20s of the last century, this book is still interesting today. By getting acquainted with entertaining and simple experiments based on chemical laws, the reader will receive a visual understanding of the processes occurring in the world around us. Annotation for the 1930s edition: This book is not a chemistry textbook, not a systematic collection of chemical experiments. This is a book for experimentation in amateur chemistry circles under the guidance of a teacher or friend familiar with chemistry, containing a number of interesting experiments based on the laws of chemistry. Along the way, references are made to the practical applications of chemistry to various fields of activity, which are not always noted in elementary textbooks. Although the book does not pursue educational purposes, I still think that someone unfamiliar with chemistry will get from it a basic understanding of this science; an acquaintance will find in it instructions on how to use his knowledge to stage experiments in a more effective way. This book is intended for readers who know how to be careful when handling some not entirely safe substances. How to handle them so as not to harm yourself and others is indicated in a special addendum at the end of this book; the reader, even completely unfamiliar with chemical manipulations, will find there the necessary instructions for their implementation. Source: