Analysis of Periodical Works on Natural History. 225 



Amelanclder as a distinct genus, containing, with this plant, Pyrus hotri/a- 

 pium, ova/is and cretica; while on the contrary Sir J. E. Smith has thought 

 it best to reduce the whole order in which it stands to the two genera, 

 Mespilus and Pi/nis. Erythriim caffra, native of Southern Africa, flowered 

 for the first time in this country last year; and nowfigured,as is supposed, for 

 the first time. Az-um Italicum, frequently confounded with A. maciilatum. 

 " It was in this species (adds the Editor) that M. Lamarck observed an ex- 

 traordinary degree of heat, amounting almost to burning, in the spadix, at 

 a certain epoque, probably that when the fecundation of the germens takes 

 place. This high temperatui-e continues only for a few hours, and when 

 several spadices come from the same root, the heat is evolved from each, 

 in succession, as they arrive at the proper epoque, while the rest remain 

 at the same temperature as the surrounding atmosphere. This observation 

 is said to have been confirmed by Desfontaines. 



" We are not informed, however, that the fact was proved by the ther- 

 mometer ; and, if not, it is possible that some pungent vapour might occa- 

 sion the sensation of heat in the fingers, without really increasing the tem- 

 perature of the surrounding air. We hope some of our readers may be 

 induced to attend to this curious phaenomenon." 



The Botanical Register. No. 103. 



With this number are given the descriptions of the following plants, the 

 figures of which were contained in Nos. 100 and 101 : — 



Plate 711- Physica «yji7fl/«; belonging to the Natural Order o'l RhamneoB 

 described by ^Ir. Brown in Flinders's Voyage, 2, 554, where upwards of 30 

 plants of this order are said to be found in Terra Australis. — Lonkera 

 flexuosa ; native of China, said to be quite new to our collections. — Marica 

 ccerulea, a newly observed species from the Brazils, very near to M. Nor- 

 thiana. — Amaryllis Belladonna, irom Southern Africa, long confounded with 

 Aquestris, a. West Indian plant. — Pancratium australasicum, from the newly 

 explored inland parts of New South Wales, where it was lately discovered 

 by Mr. Cunningham, the zealous investigator of the natural history of 

 those regions. — Tabermcmontana laurifolia. — Scabiosa freAAiana.gathered on 

 the summit of Mount Ida by Mr. Barker Webb in October 1819. — Tro- 

 peeolum peregrinum.— Amaryllis maranensis, the Hippeastnon stylosum of 

 Mr. Herbert in Curtis's Mag.— Cahmihe vcratrifolia : this is a genus sepa- 

 rated from Limodorum and Bletia by Mr. Brown. — Acacia Lambertiana, a 

 new Mexican species from the collection of Don Jose Pavon : the descrip- 

 tion by Mr. Don. — Brachystelma tuberosum ; a genus of the Nat. Ord. of 

 Asclepiade* established by Mr. Brovivs.— Calceolaria corymbosa. — Amaryllis 

 Candida, sent to the Horticultural Society in 1823 from Peru. 



XLVII. Proceedings of Learned Societies. 



HORTICULTURAL SOCIETY OF LONDON. 



Jiily 1. — TPHE Silver Medal was presented (o James Cowan, 

 ■*■ Esq. for his attention to the objects of the So- 

 ciety in sendinfr a valuable collection of seeds and bulbs from 

 Peru for the Garden of the Society. 



The following couimunications were read : 



Directions for cultivating the Sugar Cane, with Observa- 

 tions on the Sjjecies and Varieties of that Plant. By Mr. 



Vol.62. No. 305. SeiJt. 1823. F f George 



