Progress of Knowledge.
A course of interesting lectures, on the construction of the heart and the circulation of the blood, &c., &c., are being delivered to the members of the "Young Men's Mental Improvement Society," by Mr. Haycock, jun., veterinary surgeon, of Huddersfield. When we last had occasion to allude to this valuable institution, on the celebration of its anniversary, a few months ago, we then stated that the number of its members amounted to about 150. During the short time that has since elapsed, about 50 more have availed themselves of its advantages. We would again take it upon us to urge all young persons, who are wishful to improve their minds, and thus render themselves useful, active members of society, to join the institution; all the privileges of which, we believe, may be enjoyed by the payment of the small sum of 3½d. per week.