Pessimists who fear that science is exhausting nature's mysteries can take fresh hope from a newly published book: The Natural History of Mosquitoes, by Dr. Marston Bates (Macmillan; $5). Mosquitoes punch holes in man; they pester him, keep him awake, infect him with deadly diseases. So well-financed scientists, determined to deal with mosquitoes, have studied them intensively for more than half a century, accumulating a vast amount of information. But, as Dr. Bates points out, they have hardly begun to find out how even the best-known species go about their business.
The feeding habits of mosquitoes (their most intimate contact with...