This district of the 'Strand,' which I have chosen because it is the most unhealthy district in London, and in some respects the worst in the whole country, is, so to say, the pulpit from which the British have preached sanitation to the whole world. In it we find the offices of the Registrar-General and the London County Council; the Temple, where Sanitary Bills are drafted, and the Law Courts, where the sanitary law is administered; the Royal College of Physicians; the Examination Hall where candidates for diplomas of Public Health and Medicine are examined, and also the offices of the 'Lancet' and the 'British Medical Journal.' The Royal College of Surgeons, the Local Government Board and Imperial Parliament, if not within, are only just outside its limits. It is doubtful if any district in London or any other city is better provided with open spaces than the Strand. St. James's Park and the Green Park are both partly within its limits. It has the Embankment and the Thames to the south, the Temple Gardens to the east, Lincoln's Inn Fields to the north-east, and Trafalgar Square in the centre. It is wonderfully provided with what are miscalled 'lungs,' but it is evident that lungs are of little good if the blood only circulates in them occasionally on a Sunday. It is well to bear this fact in mind, because our municipal governors sometimes talk as if the provision of 'open spaces' at exorbitant and extravagant cost could compensate for overcrowding in the dwelling, with a lack of light and air therein. It is in the Strand, more than in any other district, that houses have been built of great height and enormous cubic capacity without any curtilage whatever. I have attended 'banquets' at more than one hostelry in this district where 150 or 200 persons have been fed in a room having no outside windows of any kind, and where, late in the evening, the guests have been provided with a little fresh (!) air by opening glass partitions communicating with a huge 'coffee-room' or table d'hôte room. These rooms are made by enclosing what ought to be open courts in the centre of these huge hotels, and their utilisation is only possible because of the perfection to which the science of artificial illumination has been brought. There can be no health without daylight, and sunlight, and fresh air, but the electric light is good enough to make money by. To a greater or less extent, throughout London the height of the houses has been gradually raised, and the available curtilage has been built upon. This is seen in the dwellings of the rich, and there is no doubt that the conditions which lead to overcrowding are all intensified in the poorer quarters. BUILDING REGULATIONS Part V. of the London Building Act, 1894, provides for open spaces about buildings and height of building.