Bibliographical Notices. 297 



DlCOTYLEDONES. 



Composite 72 Chenopodeae 15 



Cruciferae 44 Boragineae 13 



Leguminosae 39 PrimulaceaeandLentibulariae 13 



Umbelliferae 38 Geraniaceae and Oxalideae. . 14 



Rosacea3 and Pomaceae .... 36 Rubriaceae 11 



Labiatse 35 Hypericineae 9 



Scrophularinae and Oroban- Sempervivae 9 



cheae 31 Solaneae 8 



Caryophyllaceae and Lineae. . 31 Euphorbiaceae 8 



Corylaceas and Salicineae . . 28 Papaveraceae 7 



Ranunculaceae 20 And referable to thirty-nine 



Polygoneae 18 other Orders 113 



The Grasses form nearly two-thirds of the Monocotyledons, and 

 together with the Composites one-fourth of all the Phanerogamous 

 plants ; while Cruciferee, Leguminosce, Umbelliferae, Rosacea and La- 

 biates form together one-fourth more. Amongst the plants peculiar to 

 the county are noticed Linosyris vulgaris and Lobelia ureus : Primula 

 veris and Campanula rotundifolia, of common occurrence in the ad- 

 joining counties, are but rarely met with. Erica vagans is chiefly re- 

 stricted to the serpentine formation ; Iris faztidissima and the Elm are 

 frequent in the red sand ; the Cistace<e, Clematis vitalba and Inula 

 Conyza on the limestone, and the Oak on the schist formation. 



We trust that the example which has been set by Dr. Shafter will 

 be followed by others, and that ultimately we may expect to have 

 full accounts of the climate and natural productions of the various 

 counties of England. 



The tables of statistics of life and disease have been made with 

 great care and are well worthy of attention. 



Annates des Sciences Naturelles : — Zoologie, M. Milne Edwards. 

 Botanique, MM. Ad. Brongniart et Guillemin. Paris : Fortin, 

 Masson and Co. 



Sept. 1842. — Zoology. — M. F. Dujardin on the Anatomy of Gor- 

 dius and Mermis. The author gives the details of structure in the 

 Gordius aquaticus and Gordius tolosanus. He confirms the account 

 given by M. Siebold of the extraordinary structure of the animals of 

 this genus. " They are," says M. Dujardin, " without mouth, without 

 anus, without intestine, without veritable nerves or vessels. They 

 have internally a fleshy muscular tube with thick walls. They have 

 only a single aperture situated at the posterior extremity and serving 

 doubtless the function of generation." Wanting all the organs ne- 

 cessary to the preservation of the individual, M. Dujardin is led to 

 suppose that the Gordius may be the last stage of development of a 

 worm, in which those organs have been atrophied in consequence of 

 the excessive growth of the tegumentary system and of the organs 

 destined for the continuation of the species. His genus Mermis differs 

 from Gordius in the structure of its integument, in the presence of a 

 minute terminal mouth, and in the mode of development of the ova. 



