Spine [ - front cover, endpapers, tp, toc, pages 1 - 5 ]
Plate X. Organs of the generation of the Hermaphrodite Simia concolor.
Plate XII. Section of the shaft and lateral drifts of the Perkiomen lead mine.
Plate XIII. Buprestis harrissi. Elater vernalis. Amphicoma vulpina. Notoxus anchora.