From the hygienic point of view, the Port of London must present one of the greatest problems in the world. Into it come ships from all over the globe, bringing with them men of all nationalities, and the possibility of infection with any of the terrible diseases known to mankind, particularly the plagues of the East - cholera, typhoid, Yellow Jack. To prevent these diseases from being brought ashore is a work that demands all the ingenuity of medical science, and how it is accomplished Dr. C.F. White, Medical Officer of the Port of London, will explain in this evening's talk.