Refereed/Peer-reviewed Vols. for 1846-70 numbered also as 2d ser., v. 1-50; 1871-79, also as 3d ser., v. 1-18. Vols. for 18 - include: Proceedings of the Boston Society of Natural History, later issued separately. Final issue consulted (viewed May 1, 2008). Description based on: Vol. 2, Nov. 1820; title from pdf caption (ProQuest APS Online, viewed May 1, 2008).
Vols. 2-49, 1819-46, issued as v. 50. Beginning with v. 51 (1846) every tenth volume includes a general index for the preceding ten volumes.
Proceedings of the Boston Society of Natural History.