HISTORY OF ESSEX BOTANY. 229 Mentha angustifolia spicata C.B., spicata folio longiora, acuto, glabro nigriore J.B. Romana Ger. Romana angustifolia sive Cardiaca Park. Spearmint or Heart-mint. Hujus odor gravior est & injucundior multo quam Menthae cardiacae in hortis cultae." [Mentha viridis L.] " Mentastri aquatici genus hirsutum spica laxiore. J.B. Mentha palustris folio oblonga. C.B. Mentastrum minus. Ger. emac. hirsutum Park. Hairy Water-mint with a loose spike, and long leaf." [Mentha pubescens Willd. var. palustris (Sole).] Both found by Mr. Dale, beside Bocking River in Essex, the one a little above the Fulling-mill, the other below it in two or three places." " Orchis anthropophora oreades Col. anthropophora oreades faemina Park. . . . Man-Orchis with a green or ferruginous flower. Found by Mr. Dale in an old gravel-pit at Dalington near Sudbury in Suffolk." [Aceras anthropophora R. Br.] This, as may be seen from the herbaria of Dale and Andrews is a mistake for "Ballingdon," on the Essex side of the Stour. The mistake is corrected in Andrews's handwriting in his copy of the Dillenian Synopsis, now in the possession of Mr. W. A. Clarke, also on one of Dale's tickets to one of the three specimens of this species from his herbarium now in the British collection at Cromwell Road, and by Ray himself in Gibson's Camden, p. 361. Papaver dubium, "Mr. Dale shew'd it me in our neighbourhood at Bocking." Ruppia rostellata, from Goldhanger, as in the Historia. Prunus insititia. "Observed by Mr. Dale in some hedges both in Essex and Suffolk." Viola hirta. "Found by Mr. Dale in Essex and Cambridgeshire in several places." [To be continued.] ADDITIONAL NOTES ON TREE-TRUNK WATER-PIPES. By T. V. HOLMES, F.G.S., F. Anthrop. Inst. WHEN collecting the information about Tree-trunk Water-pipes, which has already appeared in the Essex Naturalist,1 I was much struck by the great difficulty of foreseeing where they were likely to be mentioned, or who might possess any knowledge of them. As a consequence of the publication of my remarks, I have learned some additional details about them from various sources. And considering the oblivion which so soon enshrouds obsolete contrivances when the last generation which knew, and used them, has passed away, they seem worth adding to those already given. In the first place, my friend, Mr. W. Whitaker, F.R.S., 1 Vol. xiii., pages 60-75 (July, 1903).