Plates numbered in two groups (70 and XXX).
"Reprint from the Transactions of the Amer. Philos. Society, n. s., vol. xviii, no. 1 [& 3]."
Master microform held by: UnM.
Microfilm. Ann Arbor, Mich. : University Microfilms International, [1997?] 2 microfilm reels ; 35 mm.