We must also protest against massing hospitals, alike only in one circumstance, together for the sake of taking their statistics _in bulk_ in this way, except for the most general purposes—which is indeed all Dr. Le Fort has in view here—especially as our own lying-in institutions of these islands, which come out best individually, appear here confounded amongst the greatest sinners. But Dr. Le Fort’s general conclusion, against the influence of size _per se_, is no doubt correct. As a general rule, statistics appear to show that the great mortality of lying-in hospitals is of periodical occurrence. Puerperal women, as everyone knows, are the most susceptible of all subjects to ‘blood-poisoning.’ The smallest transference of putrescing miasm from a locality where such miasm exists to the bedside of a lying-in patient is most dangerous. Puerperal women are, moreover, exposed to the risks of ‘blood-poisoning’ by the simple fact of being brought together in lying-in wards, and especially by being retained a longer time than is absolutely necessary in lying-in wards after being delivered, while to a great extent they escape this entire class of risks by being attended at home. There are no doubt difficulties in assigning the exact effect of every condition to which a lying-in woman may be exposed in contributing to these death-rates, but there are, nevertheless, a few great fundamental facts which arrest attention in such an enquiry. It is a fact, for instance, that however grand, or however humble, a home may be in which the birth of a child takes place, there is only one delivery in the home at one time. Another fact is, that a second delivery will certainly not take place in the same room, inhabited by the same couple, for 10 months at least, and may not take place in the same room for years. The Registrar-General has shown us that under these conditions the death-rate among lying-in women all over England, and from all registered causes, is about 5·1 per 1,000. In many London workhouses the number of deliveries yearly is so small that, so far as concerns annual deliveries, they approach more closely to dwelling-houses divided among a number of families than they do to lying-in hospitals properly so called. Let us now see what relation there is between the annual deliveries and the death-rates in these workhouse wards. Assuming that the London workhouse lying-in wards have certain conditions in common, we find that twenty-seven infirmaries suffered from lying-in deaths in five years, and that in thirteen there were no deaths in the same years. Now, in each of these twenty-seven hospitals yielding deaths, the deliveries averaged 29 per annum, while in the thirteen infirmaries without deaths the deliveries averaged under 16 per annum.