ZOOLOGY' AND BOTANY, MICROSCOPY, ETC. 55 



fiictors. 5. Among hairy calyptras several types may be distinguished 

 which are characteristic of the different groups : for instance, the 

 unicellular basal descending hairs of the Campylopodeae, the multi- 

 cellular ascending hairs of the Orthotrichaceae, the long felted hairs of 

 Polytrichum. In most groups a progressive development of the hairs is 

 to be observed. 



Life-history of Funaria hygrometrica.* — P. Janzen gives a com- 

 plete account of the life-history of Funaria hygrometrica, with much 

 detailed text and copious figures. He describes his carefully watched 

 cultures, the spores, the protonema. moss-bud, rhizoids, bulbils, root- 

 parasites ; then the moss-plant, its branching, stem, leaves, manner of 

 inflorescence (male and female), calyptra, embryo, sporogonium, seta, 

 capsule, stomata, peristome. His notion was to give the whole story 

 without any gap. 



Accessory Leaves in Milium and Orthomnion.t — H. N. Dixon 

 gives an account of some undescribed structures in Milium, namely, 

 certain accessory leaves or leaf-like appendages, which occur here and 

 there among the normal leaves on the stoloniform branches. He 

 describes their characters in M. affine, M. cuspidatum, M. rostratum and 

 other species, also in Orthomnion crispum, 0. trichomitrium, and 0. Loheri. 

 He also publishes some notes on the genus Orthomnion with a view to 

 clearing away the confusion which surrounds the species. The type is 

 0. crispum, from which the other original species 0. trichomitrium is 

 distinguished by little save its organs of fructification. To 0. crispum 

 must be referred as a species the Milium subcrispum of C. Miiller. The 

 M. pseudocrispum of C. Miiller must, however, be referred to M. rostratum. 

 The nerve structure in Orthomnion is simpler than in most species of 

 Milium. 



Monograph of the Hepaticge.f— F. Stephani continues his mono- 

 graphs of the genera of hepatics, giving a Latin description of every 

 species. A large percentage of the species are new to science. The 

 genera treated of are as follows : — Mastigobrgum (74 species, a continua- 

 tion), Mastigopelma (2 species), Acromastigum (1), Micropterygium (9), 

 Mgtilopsis (1), Psiloclada (?>), Sprucella (1), Lepidozia (218), Arach- 

 niopsis (3), Bleptiarostoma (12), Ohandonanthus (8), Anthelia (3), 

 Herpocladium (3), hot actus (49), Schisma (71), Lepicolea (5), Chseto- 

 colea(l), Mastigoptiora (10), Ptilidium (5), Lepidolsena (9), Trichoclea (32). 

 The greater part of this work has been published in the Bulletin de 

 THerbier Boissier, a periodical now defunct. 



Muscinese of Yorkshire.— T. Sheppard,§ in his account of the visit 

 of the Yorkshire Naturalists to Sedbergh, publishes some notes on the 

 rare mosses collected ; for instance, Campylopvs atrovirens var. gracilis 

 Dixon, Rhabtloicoisia denticulata and others at Cautley Spout, Tricho- 

 stomum crispulum in Helm Gill, and Pterogonium gracile by the River 

 Lune. 



* Schrift. Natur. Ges. Danzig, xii. heft 3 (1909) pp. 1-4-1 (many figs.), 

 t Rev. Bryolog., xxxvi. (1909) pp. 141-7. 



X Species Hepaticarum. Geneve et Bale : Georg et Cie., 1909, iii. pp. 517-G93 ; 

 iv. pp. 1-64. § Naturalist, No. 633 (1909) pp. 345-8. 



