**Textile Testing by Prof. John H. Skinkle (1940)** This book, aimed at both industry professionals and textile technology educators, covers the physical, chemical, and microscopical aspects of textile testing. The microscopical section on fiber identification could benefit from illustrations. The physical section includes a range of tests, some of which are unusual for this type of book. The chemical section discusses the chemical nature of synthetic and natural fibers and provides standard American methods for analyzing them. While the book serves as a practical guide for students, it also delves into current theories of cellulose, wool, and silk structure and references modern textile research. Despite some poor diagram reproduction, it is a valuable addition to British textile libraries. **Plant Microtechnique by Donald Alexander Johansen (1940)** This book aims to compile and correlate the extensive literature on microscopical techniques and life histories. It provides detailed, reliable procedures for various methods used in cytology, adapted for different phyla. The first section covers general techniques, while the second focuses on specialized methods for algae, fungi, and other lower organisms. The book includes life-cycle details, collection and preservation methods, and staining suggestions. It is particularly useful for less-explored types like Pyrrophyta and Cyanophyta. The book is valuable for both British and American users, though some American reagents may be less familiar to British readers. **Industrial Solvents by Ibert Mellan (1939)** This comprehensive guide offers a wealth of information on the properties and applications of industrial solvents. It covers fungicidal actions, volatility, toxicity, and solubility, with detailed tables and graphs. The book is organized by chemical composition, with more emphasis on important substances. It includes a useful chapter on plasticizers and concludes with a section on graphical expression and interpretation. Despite some organizational issues, it is an indispensable resource for solvent users, though future editions could benefit from better organization and a more detailed index.**Textile Testing by Prof. John H. Skinkle (1940)** This book, aimed at both industry professionals and textile technology educators, covers the physical, chemical, and microscopical aspects of textile testing. The microscopical section on fiber identification could benefit from illustrations. The physical section includes a range of tests, some of which are unusual for this type of book. The chemical section discusses the chemical nature of synthetic and natural fibers and provides standard American methods for analyzing them. While the book serves as a practical guide for students, it also delves into current theories of cellulose, wool, and silk structure and references modern textile research. Despite some poor diagram reproduction, it is a valuable addition to British textile libraries. **Plant Microtechnique by Donald Alexander Johansen (1940)** This book aims to compile and correlate the extensive literature on microscopical techniques and life histories. It provides detailed, reliable procedures for various methods used in cytology, adapted for different phyla. The first section covers general techniques, while the second focuses on specialized methods for algae, fungi, and other lower organisms. The book includes life-cycle details, collection and preservation methods, and staining suggestions. It is particularly useful for less-explored types like Pyrrophyta and Cyanophyta. The book is valuable for both British and American users, though some American reagents may be less familiar to British readers. **Industrial Solvents by Ibert Mellan (1939)** This comprehensive guide offers a wealth of information on the properties and applications of industrial solvents. It covers fungicidal actions, volatility, toxicity, and solubility, with detailed tables and graphs. The book is organized by chemical composition, with more emphasis on important substances. It includes a useful chapter on plasticizers and concludes with a section on graphical expression and interpretation. Despite some organizational issues, it is an indispensable resource for solvent users, though future editions could benefit from better organization and a more detailed index.