Although 90 years have passed since first publication, Wheeler's "Ants Their Structure, Development and Behavior" remains a classic of ant enthusiasts and ecologists. Although much of the taxonomy has changed and continues to change, the book is still a valuable reference for identification and description of many of the world's ants. What I enjoyed most are chapters XVII -XXVII that deal with many of the fascinating ant relationships with other organisms (tending aphids, protecting plants, slave-making ants...). Another asset of Wheeler's book are the numerous wonderful illustrations accompanying each section. Although a bit technical for a general audience, "Ants" should remain a stimulating excursion into a fascinating group of insects.