Referee's report by John Hall Gladstone, on a paper 'The absorption spectra of the alkaloids' by Walter Noel Hartley Second referee's report. Recommended for publication in Philosophical Transactions. Has read and reported on the first part of the paper and believes this also to be worthy of publication. The two parts should be combined when published in Philosophical Transactions. Subject: Chemistry [Published in Philosophical Transactions, 1885]. 6 April 1885