254 BACOT: MOSQUITOES AND THE DANGER OF MALARIA. The Chart showing the distribution of Anophelene mosquitoes (fig. 9), if compared with that showing the past occurrence of Ague in England (fig. 8 opposite), demonstrates (as the authors FIG. 9.—THE KNOWN DISTRIBUTION OF THE ANOPHELES MOSQUITOES IN ENGLAND AND WALES. of the paper to which I acknowledged my indebtedness in my introduction point out) that the distribution of the disease is more restricted than that of the mosquitoes. While it is possible