Letter, additions to paper titled 'Note relative to the supposed origin of the deficient rays in the solar spectrum; being an account of an experiment made at Edinburgh during the annular eclipse of 15th May 1836' from James David Forbes to J G [John George] Children Letter containing footnotes that Forbes wished to add to his paper prior to publication. Subject: Astronomy Paper published in volume 126 of Philosophical Transactions as 'Note relative to the supposed origin of the deficient rays in the solar spectrum; being an account of an experiment made at Edinburgh during the annular eclipse of 15th May 1836'. Written by Forbes in Edinburgh and addressed to Children at the British Museum, London. Read 16 December 1836. Abstract of paper published in Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society of London], Volume 3, 1837. 13 December 1836