Howard Collection

Choose from 8 images in our Howard Collection

Microscopical observations of cinchona bark and seedlings, 1862

Cinchona calisaya var. ledgeriana, 1869

Cinchona anglica, 1869

The Cinchona Region of South America, 1862

Cinchona calisaya var. ledgeriana, 1862

Cinchona officinalis, 1869

Cinchona calisaya, 1862

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