These two volumes, "Cryptogamic Botany" by Gilbert M. Smith, provide a comprehensive review of cryptogams, including algae, fungi, bryophytes, and pteridophytes. Volume 1 focuses on spore-producing plants, discussing their classification and describing various types of algae, fungi, and lichens. Volume 2 covers bryophytes and pteridophytes, presenting them in an evolutionary context. The books are well-suited for students and researchers, offering detailed descriptions and a wealth of references. This revised third edition of "The Petrology of the Sedimentary Rocks" by Dr. F. H. Hatch and Dr. R. H. Rastall, edited by Maurice Black, reflects significant research advancements since the last edition in 1923. The revision includes substantial rewrites and modifications to the text, with the omission of chapters on metamorphism due to the publication of Dr. A. Harker's "Metamorphism." The book reintroduces an appendix on minerals found in loose detrital sediments. Despite minor omissions, such as the lack of detailed treatment of bauxite and the absence of references to 'cornstones,' the revised edition is a valuable resource for British geological literature. "Rainfall and Tree Growth in the Great Basin" by Ernst Anteys examines rainfall variations in the Great Basin region, primarily in Oregon, northern California, Nevada, and Utah. The study supplements historical records with data from tree growth rings, lake levels, and river levels. It provides detailed analyses of major rainfall fluctuations since 1801 and discusses the potential for future water supply improvements. The book is a comprehensive study of historical climatology, integrating various sources of evidence to draw informed conclusions.These two volumes, "Cryptogamic Botany" by Gilbert M. Smith, provide a comprehensive review of cryptogams, including algae, fungi, bryophytes, and pteridophytes. Volume 1 focuses on spore-producing plants, discussing their classification and describing various types of algae, fungi, and lichens. Volume 2 covers bryophytes and pteridophytes, presenting them in an evolutionary context. The books are well-suited for students and researchers, offering detailed descriptions and a wealth of references. This revised third edition of "The Petrology of the Sedimentary Rocks" by Dr. F. H. Hatch and Dr. R. H. Rastall, edited by Maurice Black, reflects significant research advancements since the last edition in 1923. The revision includes substantial rewrites and modifications to the text, with the omission of chapters on metamorphism due to the publication of Dr. A. Harker's "Metamorphism." The book reintroduces an appendix on minerals found in loose detrital sediments. Despite minor omissions, such as the lack of detailed treatment of bauxite and the absence of references to 'cornstones,' the revised edition is a valuable resource for British geological literature. "Rainfall and Tree Growth in the Great Basin" by Ernst Anteys examines rainfall variations in the Great Basin region, primarily in Oregon, northern California, Nevada, and Utah. The study supplements historical records with data from tree growth rings, lake levels, and river levels. It provides detailed analyses of major rainfall fluctuations since 1801 and discusses the potential for future water supply improvements. The book is a comprehensive study of historical climatology, integrating various sources of evidence to draw informed conclusions.