This book deals with meteorological instruments and the practical aspects of making observations. Being the first revision of the book for over 18 years, much of the text has been revised to reflect current practices in instrumentation and units of measurement. Colour illustrations are introduced in this edition, and for the first time many photographs taken by officers on United Kingdom observing ships are included, notably those of the state of the sea.: there is also a completely new set of cloud photographs in colour. A valuable reference. 227 pages. HB.