BRITISH ASSOCIATION

ADVANCEMENT OF SCIENCE;

PRINTED AT THE "GUARDIAN" STEAM-PRINTING OFFICES, 3, CROSS STREET.

PROCEEDINGS

OF THE

THIRTY-FIRST MEETING

OF THE

BRITISH ASSOCIATION

FOR THE

ADVANCEMENT OF SCIENCE;

HELD AT

MANCHESTER, SEPTEMBER 4TH TO 11TH, 1861.

Reprinted from the "Manchester Guardian."

MANCHESTER:

PRINTED AT THE "GUARDIAN " STEAM-PRINTING OFFICES, 3, CROSS STREET.

1861.