126 THE ESSEX NATURALIST "ORANGE BOVEN" Under the cartoon of John Hall appear the words "Orange Boven." It was many years before I discovered what they meant. I had a vague idea that they had something to do with Holland and some 30 years ago a Dutch friend told me that the phrase was a loyal exclamation meaning "Up the House of Orange." Years passed and I could not find out anything more until, in 1941, to my great joy I was enabled to run the expression to earth. It appears that the sudden and unexpected arrival in Decem- ber, 1813, of deputies from Holland to invite this country to assist in driving Bonaparte's connections from the Netherlands occasioned an extraordinary sensation in London. In conse- quence T. J. Dibdin, the playwright, was called upon by the management of the Drury Lane Theatre to produce something appropriate to the patriotic occasion. This he did under the appellation of Orange Boven or More Good News. The inter- lude was produced at the above theatre on December 19th, 1813. On the following day a burletta Orange Boven or the Embarkation for Holland was produced at the Surrey Theatre. In the same month John Hall organised a public banquet, held at the City of London Tavern, Bishopsgate Street, to cele- brate the emancipation of Holland. The Duke of Clarence occupied the chair, supported by many Earls, Viscounts, Lords, M.P.S, etc. The current newspapers give a very long account of the gathering with names of some of the more important persons present. The dinner consisted of two courses and a dessert with foreign wines of every description. Tickets, which were only to be obtained of the Stewards, who were leading City men, cost £3. EXOTIC TREES IN GREAT BRITAIN BY FRANK W. JANE, PH.D., D.SC., F.L.S. [Presidential Address delivered April 3rd, 1948] IN so far as it gives me almost unlimited scope, the title of my address is a useful one, for it is obvious that the trees in Britain which are not native are legion. So comprehensive a survey of our exotic trees was, however, far from my mind when I selected the title and it was my desire to treat of those trees which, having been introduced into this country, have become part of the British landscape. Here, immediately, difficulties arise. Some trees, like the Sycamore, have, to all intents, joined our British flora and are in fact far more successful than some of its older