In lively fashion Mr. Gattinger records the development of the Ontario Veterinary College, the oldest continuously operating veterinary school in this hemisphere. Viewing its history from the perspective of today, he sees the College and the profession it serves moving in response to the times, from a discipline centred mainly on the study of equine diseases to a highly specialized field of endeavour contributing to the research and technological advances of the modern age. Under its five principals the College has in each era of its history been the training-ground of experts in an important aspect of the agricultural industry, and its adaptation to changing conditions and to the personalities of its successive leaders, in Mr. Gattinger's view, makes it a striking example of the theory put forward by Professor Toynbee of growth through challenge and response. In celebrating its hundredth anniversary the College thus pays tribute to its founders and to the several generations of teachers and research workers who have served it.