English to Polish Medical Livestock / Animal Husbandry

The procedure [of vaccination] was based almost exactly on the earlier practice of inoculating the smallpox, the matter being inserted under the skin of the arm by a lancet point; also the continuance of the same stock from arm to arm through a series of cases was an idea taken from some of the more adroit variolators.


Nie za bardzo rozumiem sens :/ Dziękuję za wyjaśnienie.