A Catalogue of the Fifty Plants from Chelsea-Garden, Presented to the Royal Society, by the Worshipful Company of Apothecaries for the Year 1750, Pursuant to the Direction of Sir Hans Sloane, Baronet, Med. Reg. & Soc. Reg. Nuper Praeses, by John Wilmer, M. D. Clariss. Societat. Pharmaceut. Lond. Soc. Hort. Chels. Praefect. et Praelect. Botanic

to account satisfactorily for the whole appearance; which I should have looked upon as solved, could such an one have been discerned in a right situation. But here I beg to refer myself to the judgment of this Society: only shall observe, the two gaps we saw were directly interpos'd between the sun and their respective streaks. J. Short. XXIV. A Catalogue of the Fifty Plants from Chelsea-Garden, presented to the Royal Society, by the worshipful Company of Apothecaries for the Year 1750, pursuant to the Direction of Sir Hans Sloane, Baronet, Med. Reg. & Soc. Reg. nuper Praes, by John Wilmer, M.D. clariss. Societat. Pharmaceut. Lond. Soc. Hort. Chelf. Praefect. et Praelect. Botanic. Read May 2. 1401. A Butilon periplocæ acutiori folio, fructu stellato. Hort. Elt. 1402 Allium saxatile acori radice flore purpureo Bocc. Mus. 1403 Androsoface vulgaris latifolia annua Tourn. 123. 1404 Anemonospermos African. fol. & facie Taraxaci incanis Boeth. 1405 After Tripolii flore C. B. 1406 After cœruleus ferotinus frutescens Tradescant. 1407 Balfanita fol. Agerati Valll. Santolina spinosa fol. Agerati Boerh. 1408 Carduus albis maculis notatus exotico flore albo C. B. 381. 1409 Camara foliis subrotundis rugosis flore coeruleo Houst. 1410 Carduus Creticus Rapi folio Inst. R. H. 1411 Cirsium tuberosum Lactucae capitulis spicatis Hort. Elt. 1412 Cnicus exiguus capite cancellato semine tomentoso T. Inst. 1413 Cnicus orientalis Atractylis lutea dictus altifimus T. Cor. 33. 1414 Cnicus orientalis Atractylidis folio flore Leucophæo T. Cor. 1415 Collinsonia Americana Urticae foliis floribus ex albo purpur. Dillen. 1416 Corindum ampliore folio fructu majore T. 431. 1417 Corindum folio et fructu minori Tourn. 1418 Elichrysum African. fætidissim. calyce argenteo Tourn. 1419 Eryngium montanum Amethystinum capitulo majore pallescente T. 327. 1420 Ferula fol. glauco semine lato oblongo quibufdam Thapsia ferulacea C. B. 1421 Hesperis Leucoii folio non ferrato filiua quadrangula J. R. H. 223. 1422 Hieracium villosum Sonchus lanatus Dalechampio dictum R.H. 231. 1423 Hieracium Alpinum Scorzonerae folio Inst. R. H. 1472. 1424 Horminum Napi folio Mor. Hort. Reg. Bleff. 1425 Jacea spinosa alato caule capite lanuginoso C. B. P. 1426 Jacea angustifolia minor Virginiana tuberosa radice Banister 1427 Jacea fol. candicantibus laciniatis caliculis non splendentibus 1428 Lychnidea Mariana elatior Alfinesaquatic. foliis floribus in longam spicam dense stipatis Pluk. 1429 Lychnis oriental. annua supina Antirrhini fol. fl. min. purp. 1430 Lychnis viscosa flore muscofo Ocimastr facie C. B. P. 1431 Marrubium album candidissimum et villosum T. Cor. 1432 Martynia foliis ferratis Lin. Hort. Cliff. 1433 Medica marina major spinosa Park. Theat. 1434 Medicago Vulnerariae facie Hispanica Inst. R. H. 412. 1435 Mimosa humilis frutescens et spinosa filiquis conglobatis 1436 Moldavica Betonicae fol. floribus majoribus caeruleis pendulis Am. 1437 Oryza Lobel. Icon. 31. Offic. 336. 1438 Plantago maxima Tartarica Gerberi 1439 Scolymus Chrysanthemus annuus A. R. Par. 1440 Scorpioides Bupleuri fol. corniculis asperis magis in se contortis et convolutis Mor. Hist. 1441 Sideritis Hispanica frutescens seu lignosior I. R. H. 192. 1442 Sonchus Lusitanicus Asplenii folio 1443 Stachys Lychnitis Clufii 1444 Tithymal. arboreus altissimus fol. falcis caulibus rubentibus Boer. 1445 Trifolium globosum repens C. B. P. 329 1446 Tordylium maximum Inst. R. H. 320. 1447 Tragofelinum maximum Austriacum foliis magis incisis Boer. 1448 Valeriana Lusitanica latifolia annua laciniata Tourn. 132. 1449 Verbena tenuifolia C. B. 1450 Urtica racemifera maxima Sinarum foliis subtus argentea lanugine villosis. Pluk. Almag. 212. XXV. Some Observations upon the Sex of Flowers by W. Watson, F. R. S. occasioned by a Letter upon the same Subject, by Mr. Mylius of Berlin. Extract of Mr. Mylius's Letter to Mr. Watson, dated at Berlin, Feb. 20, 1750-51. Read May 2. "THE sex of plants is very well confirmed by an experiment, that has been made here on the palma major foliis flabelliformibus. There is a great tree of this kind in the garden of the royal academy. It has flower'd and bore fruit these thirty years; but the fruit never ripen'd; and when planted, it did not vegetate. The palm-tree, as you know, is a planta dioecia; that is, one of those, in which the male and female parts of generation are upon different plants. We having therefore no male plant, the flowers