Brain and Behavior in Cephalopods

from the point of view of "molecular biology"-the interactions of nucleic acid structure, protein structure and enzyme action in bringing about cell infection and virus replication. Enough is included on protein and nucleic acid chemistry, and on the biosynthesis of these substances in non-viral systems, to make the train of argument intelligible to the reader who has a good basis in science but no specialized knowledge of the field. Passing reference is made to viruses other than TMV, but much fascinating material which might be encompassed by the title, for example, the roles of the tail components of the T-even phages in accomplishing penetration of the bacterial cell, is not to be found. In a style that is informal, irreverent and occasionally facetious, Dr. Fraenkel-Conrat leads us from Iwanowski's filtration experiments to the cracking of the genetic code. He even throws in some advice to the budding investigator on how to get to the top. It is refreshing to find an account of a complex subject which is simple and at the same time authoritative and up-to-date. The book is well produced, and includes some excellent photographic illustrations.