Abstract
WITH reference to a previous communication1 in which it was suggested that the colours of Polycelis nigra and Planaria lugubris are due to different depositions of melanin in the skin, the fact that a red intermediate compound is formed in the oxidation of melanin from tyrosine is significant. Pink specimens often occur (8 percent), and a large proportion of the Polycelis cornuta found at Cambridge are pink in colour.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on SpringerLink
- Instant access to the full article PDF.
USD 39.95
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Cloudsley-Thompson, J. L., Nature, 156, 294 (1945).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
CLOUDSLEY-THOMPSON, J. Pigments of Fresh-water Triclads. Nature 157, 342 (1946). https://doi.org/10.1038/157342b0
Issue date:
DOI: https://doi.org/10.1038/157342b0
