Paper, 'Researches on the development of the spinal cord, in man, mammalia and birds' by J [Jacob Augustus] Lockhart Clarke 61 manuscript pages and eight plates showing portions of spinal cords and columns from human, mammal, and bird foetuses. Subject: Physiology / Zoology Published in Philosophical Transactions as 'Researches on the development of the spinal cord in man, mammalia, and birds'. Received by the Royal Society on 20 May 1862. Read 19 June 1862. Abstract 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 12, 1863. [1862]