This is a good, traditional textbook prepared by two distinguished Canadian virologists with the help of several of their colleagues. It is well illustrated, largely from Canadian work, orderly, and well indexed. The present edition represents a departure from the earlier editions, in that the authors have turned to associates for the comprehensive chapters of arbor viruses (D.M. McLean), poliomyelitis (A.J. Beale), statistical methods (D.B.W. Reid), cell cultivation (K. R. Rozee), and the brief but stimulating chapter on tumor viruses by L. Siminovitch. One suspects that in the future it will become more and more desirable to call on specialists as the field continues to expand. The bibliography is limited to titles recommended for further reading. Rickettsial diseases are included.
Modern virology is largely the creation of laboratory workers. Attention has been so strongly focused on identification of the etiologic agents, and clinicians have been so dependent on the laboratory,