Silkworms: thirteen figures showing silkworms at various stages of development, from egg and caterpillar, to pupa and moth. Chromolithograph by H.J. Ruprecht, 1877.
Silkworms: thirteen figures showing silkworms at various stages of development, from egg and caterpillar, to pupa and moth. Chromolithograph by H.J. Ruprecht, 1877.