A serious, scientific explanation of allergies which dispels many common misconceptions and makes available considerable information on a professional rather than popular level. The history of allergies, and the years of investigation- sporadic at first- on animals and human. The two types of allergy, atopic and non-atopic. Drugs, oils and infective agents; physical agents; psychological factors; histamine; certain specific allergies; and the therapies, drugs, controls used ... Not for the Readers' Digest reader level, but unquestionably more authoritative.