"Nothing however beneficent can escape the criticism of the times in which we live. The criticism of vaccination, often passionate and violent, related chiefly to points which, however interesting they may be, leave the main question unaffected. We may speculate about the possibility of the potency of vaccine being exhausted in the human family; we may be surprised to find that people with good vaccine scars sometimes have smallpox; we may dispute as much as we please about the average period when re-vaccination may be considered a prudent safeguard; but after all we find that we rest in a security against the horrid pestilence of smallpox unknown to former generations."—Dr. George Derby.
Mr. President and Gentlemen:
—By invitation of your committee on the celebration of the anniversary of the discovery of vaccination, I appear before you this afternoon. Your greatly beloved and renowned Nestor, Dr. Davis, has most ably and