6 books
Life and Letters of Sir Joseph Dalton Hooker ..; Volume 2
Life and Letters of Sir Joseph Dalton Hooker; Volume 1
Scott's Last Expedition ... Vol. I. Being the Journals of Captain R.F. Scott, R.N., C.V.O. Vol II. Being the Reports of the Journeys and the Scientific Work Undertaken by Dr. E.A. Wilson and the Surviving Members of the Expedition, Arranged by Leonard...;
Life and Letters of Thomas Henry Huxley; Volume 1
Life and Letters of Thomas Henry Huxley; Volume 2
Thoughts on Education; Chosen from the Writings of Matthew Arnold