Pearson’s reply to this absurd and thoroughly Jennerian letter does not appear. He might have thanked Jenner for having drawn his attention to cowpox, and have proceeded to point out that beyond that service he and his friends owed him nothing, nor in anywise admitted his guardianship. Their practice was at complete variance with his teaching. He had prescribed horsegrease cowpox in which they had no faith, having tried to produce it in vain. On the other hand, they were operating with cowpox _per se_, which he had condemned as useless, being attended with no erysipelas or constitutional effect; and that working with this condemned cowpox, they found themselves producing a much milder disease, and were under no necessity of following his advice and destroying the pustule formed at the point of inoculation with escharotics; adding, that if they had been bound to his horsegrease and caustics, they would have made no progress with the public whatever. Vaccine Inoculation might be good for mankind, but it was to be something better for Edward Jenner. There was not the least reason, outside his jealousy and rapacity, why he should not have congratulated Pearson on his enterprise and promised his assistance. As to claiming the guardianship of Vaccine Inoculation, it was preposterous: it had passed wholly beyond his control. It was Pearson’s complaint that Jenner never did anything useful after the publication of _The Inquiry_. He left to others the discovery of virus, and the labour and responsibility of experimenting, and only appeared on the scene when there was some disaster whereat he could play the part of superior person, whilst insisting that all supposed improvements and successes should be assigned to his credit. Jenner is all-in-all in the vaccinators’ hagiology, but he holds the place at the cost of justice to Pearson and Woodville. To prove that I am not making a fanciful assertion, let me cite unprejudiced contemporary evidence. Dr. Paterson of Montrose in a communication to the _Medical and Physical Journal_, dated 25th May, 1801, observed-- While we are irresistibly led to join the wondering, the grateful throng, in paying the just tribute of applause to Dr. Jenner, the immortal discoverer, we must, at the same time, confess how much we are indebted to the ingenious and benevolent Dr. Pearson for bringing, in such a handsome manner as he did, the business before the public; thereby exciting, all at once, a universal, an unparalleled quest of investigation, and furnishing, by innumerable and satisfactory experiments, a complete confirmation of the noble discovery. Here, we may observe afresh, that Pearson did not confirm Jenner’s “noble discovery.” On the contrary, his use of cowpox was at distinct variance with Jenner’s prescription of horsegrease cowpox, and with his condemnation of cowpox. Jenner, as we shall see, followed Pearson: Pearson did nothing to confirm Jenner.