Writes in reference to 'Pyrola uniflora', specimens of which he once sent to [James] Hoy of Gordon Castle and which has since been included in a work of [James] Sowerby's, but believes Sowerby has not succeeded in correctly documenting it and will send more specimens for further attention. Relates that John Mackay [(1772-1802) employed at Dickson nursery, Edinburgh] has discovered many plants in north and west Scotland overlooked by [John] Lightfoot, list sent to Sowerby along with specimens of 'Eriocaulon decangulare', Mackay to send seeds of same shortly. Recommends Mackay as a collector. Has received from Dominica seeds and drawing of plant sent as the true 'Iecacuanha' but believes it to be 'Asclepias curassavica' as does [Daniel] Rutherford, will send specimen if desired.