Societies and Academies

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    LONDQN. Linnean Society, June 3.—Prof. E. B. Poulton, president, in the chair.—The Misses Katherine Foot and E. C. Strobell: The results of crossing two Hemipterous species, with reference to the inheritance of two exclusively male characters. This may be considered as a continuation of the paper published in the Society's Journal (zoology), xxxii. (1914), pp. 337˜373, on crossing Euschistus variolarius with E. servus, and the inheritance of a spot on the genital segment, which was an exclusively male character in the former species. The newly-discovered male character now investigated is the length of the intromittent organ, and is tabulated in the paper. The results of the crossing were not in accordance with Mendelian ratios as regards individuals. The authors further show that male characters can be transmitted without the Y chromosome. H. W. Monckton: Note on the plant-association at the foot of the Boium Glacier, Norway. The Boium is one of the larger glaciers which descends from the great Jostedals snow-field. It flows down into a head-valley of the Fjaerlandsfjord, and the foot of the ice is 492 feet above the sea. The latitude is between 61° and 62°, that is a little north of the Shetlands. At the foot of the ice there is the usual desolate space with fresh moraine, arid plants are gradually, finding their way on to this ground. In places where the ice has advanced a little, plants may be found growing and flowering close to the glacier itself. Among the plants thus creeping on to the moraine were noticed a combination of mountain and valley forms: of mountain plants there were:—Salix herbacea, L., Saxifraga stellaris, L., and Phyllodoce caerulea, L.; and of forms of general distribution which one does not usually associate with glaciers there were Alchemilla alpina, L., Trientalis europaea, L., Pirola minor, L., Pinguicula vulgaris, L., Pheg-opteris Dryopteris L., Lotus corniculatus, L., Sagina procumbens, L., and a species of Epilobium.—Dr. Otto Stapf: The Dragon Tree of Tenerife. The author showed various illustrations of the celebrated tree at Orotava, and especially a drawing by Don Augustin Monteverde, dating from the earlier months of 1819, before the tree was partially destroyed by a gale on July 21, in that year. This drawing is the property of Dr. Perez, of Orotava, who had sent it to Kew for comparison with other illustrations. Dr. Stapf discussed the known history of the dragon tree of the Canaries and notices of it from early writers, referring inter alia to the resinous product known as “Dragon's Blood,” formerly used as a pigment and in medicine, but now almost restricted to colouring varnishes.

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    Societies and Academies. Nature 95, 471–474 (1915) doi:10.1038/095471a0

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