it until the measles had ceased to exert its influence.]

The case of Miss H--R--is not less interesting than that of her
sister, above related. She was exposed to the contagion of the
scarlatina at the same time, and sickened almost at the same
hour. The symptoms continued severe about twelve hours, when the
scarlatina-rash shewed itself faintly upon her face, and partly
upon her neck. After remaining two or three hours it suddenly
disappeared, and she became perfectly free from every complaint.
My surprise at this sudden transition from extreme sickness to
health in great measure ceased when I observed that the
inoculated pustule had occasioned, in this case, the common
efflorescent appearance around it, and that as it approached the
centre it was nearly in an erysipelatous state. But the most
remarkable part of this history is that, on the fourth day
afterwards, so soon as the efflorescence began to die away upon
the arm and the pustule to dry up, the scarlatina again appeared,
her throat became sore, the rash spread all over her. She went
fairly through the disease with its common symptoms.

That these were actually cases of scarlatina was rendered certain
by two servants in the family falling ill at the same time with
the distemper, who had been exposed to the infection with the
young ladies.

Some there are who suppose the security from the smallpox
obtained through the cow-pox will be of a temporary nature only.
This supposition is refuted not only by analogy with respect to
the habits of diseases of a similar nature, but by
incontrovertible facts, which appear in great numbers against it.