London, 16th March, 1800. Then followed a scheme of the Institution, including “a Physician to be appointed to superintend the medical department.” Whether from Jenner’s practical inefficiency, or because the time was not ripe, or because those who were more actively interested in cowpox were satisfied with Pearson’s Institution, the project lay in abeyance till 1803. He took nothing ostensibly by his intrigue save the withdrawal of the names of the Duke of York and Lord Egremont from the patronage of the existing establishment. Meanwhile Pearson continued to operate with unabated energy, and his Institution became a recognised centre of inquiry, advice, and supply. It was designed, as he wrote, “1st, to be useful to the poor; but it had other objects, to wit, 2ndly, to ascertain the laws of the new poison for the extinction of smallpox; and 3rdly, to serve as a public office for the supply of the world with virus until supplies should become unnecessary.” One of the most flattering applications was received by Pearson from the French Consulate on 5th April, 1800. In a reply, dated 12th May, signed by the staff of the Institution, it was said-- We are not surprised that you have not yet found the disease among the cows of France, it being on the whole a rare disease in England; nor are we surprised at your want of success with the matter sent to you, because from experience we know that it very frequently fails, unless used immediately from the subject. Vaccine matter may be conveyed in various ways: we have sent it to you in three, namely, on threads, on lancets, and on glass. If you try the matter sent on thirty patients immediately, we think you cannot fail to excite the disease in some of them, and then you will please to preserve the succession by inoculation as we do in England, having had no fresh matter from the cow since January and February of last year, 1799. The Frenchmen failed again with this virus, but Dr. Woodville soon after went to Paris, and effected what was desired. Cow-Pock Dispensaries were opened in various towns throughout England, Bath and Manchester perhaps having the lead; and an Address to the Poor was drawn up as a common form to be issued from such Dispensaries. In a copy of this Address, widely circulated in and around Manchester in 1800, we read-- The experience of several years has fully proved that inoculation for the Cowpox is _a certain preservative_ against the Smallpox; and is, besides, so mild and safe a disorder, when compared with the inoculated Smallpox, that it has been generally introduced among the better informed and more wealthy inhabitants, both of this kingdom and of various parts of Europe. Inoculation for the Cowpox has been practised for several years [_less than three_] with constant success, in various parts of the Kingdom. It has never failed to prevent the infection of the natural Smallpox.