101 HISTORY IN BOTANICAL STUDY. (Being a Presidential Address delivered to the Club at the Annual Meeting on 28th March, 1931.) By SIR DAVID PRAIN, C.M.G., CLE., F.R.S. DURING the past session the Essex Field Club has received invitations to send a representative to two forthcoming historical conferences. That the Club should have been so honoured suggests that those interested in the methods adopted by students of Civil History would welcome the help of those who are accustomed to employ methods appropriate to the study of Natural History. At our Ordinary Meeting a month ago we had the privilege of listening to a contribution on the Ferns of Essex, which taught us, along with much else, how frequently, now-a-days, the Natural Historian has to seek evidence of the kind to which the Civil Historian has always been largely limited. It is not surprising that the Civil Historian should, in turn, desire to know something about the methods the Natural Historian is free to employ. If we ask what is the difference between the methods of the historian whose task is to deal with whatever has been produced by Nature, and the historian whose business is to deal with whatever has been performed by man, the answer is that there should be none. Perhaps the invitations the Club has received indicate a belief on the part of Civil Historians that there is none. When the Natural Historian reflects dispassionately on the subject, he is unfortunately compelled to admit that not-with- standing the difference in outlook on the part of the Civil and the Natural Historian, there is less difference in their methods than might have been expected. A cynical critic, you may remember, once remarked, regarding what throughout the ages has been performed by man, that the difficulty as to the great events of history has always been that they either occurred at the wrong time or that they did not occur at all; and that the business of the conscientious historian has been to remedy these defects ! The same comment might be made regarding some of the efforts to narrate the history of those natural products that have received human attention, though the Natural