ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 191 



organs, is described ; and the chemical composition of the cell-walls, etc., 

 and especially of the oil-bodies, is briefly considered. The systematic 

 part of the work is not yet reached. It is estimated that 15 to 18 parts 

 will be issued. 



Development of Fossombronia.* — H. B. Humphrey has made a 

 study of F. longiseta Aust., which grows abundantly near Stanford 

 University, in California. The plants are capable of withstanding very 

 great drought during the dry season, and when wetted are often found 

 with the sex-organs in a well advanced stage. Each leaf -lobe in the 

 gametophyte bears a single apical mucilaginous-cell, with the functions 

 of a hair. The germinating spore puts out a long germ-tube containing 

 little chlorophyll and much oil; the first rhizoid appears late. The 

 development of the antheridium is described, and exhibits some relation- 

 ship with those of Geothallus and Splmrocarpus. No centrosome was 

 observed during the stages of spermatogenesis ; the spermatid mother- 

 cell divides into two spermatids without partition-wall. Blepharoplasts 

 appear de novo. The behaviour of these and of the " Nebenkorper " is 

 described. The development of the archegonium, the sporophyte, and 

 spores are fully described. 



British Notes and Records. — E. Cleminshaw f records the boreal 

 species, Tetraplodon WormsJcioldii, previously found by Horrell and 

 Jones in Teesdale, from the peat below Craig Cailleach, Perthshire. 

 P. Ewing % gives a list of the Hepaticas of the Clyde area ; it contains 

 113 species ; 6 are new to Britain and 21 to Scotland. J. McAndrew§ 

 gives notes on a few species of Riccia from the Pentlands. During the 

 drought the Pentland reservoirs and their feeding streams were at a very 

 low level, and five species of Riccia were found growing in abundance 

 on the exposed and drying mud : R. sorocarpa, R. glaicca, R. crystallina 

 (first record for Scotland), R. glaucescens or Lescuriana, R. fluitans. 

 The latter, associated with Fossombronia cristata, occurred along the 

 bank of a stream. J. Murray || records three aquatic mosses from 

 St. Kilda, namely, Fontinalis antipyretica, Racomitrium aciculare, and 

 Grimmia apocarpa. 



Tasmanian Mosses.1[ — W. A. Weymouth, in a third paper on the 

 subject, gives the names of 9 new mosses, 5 of them with descriptions, 

 by Brotherus ; a list of 11 species, not previously recorded, for 

 Tasmania ; the names of 17 new species of hepatics determined by 

 Stephani ; and a list of 92 hepatics, new records for Tasmania. 



Bryological Fragments.** — V. Schiffner gives notes on the follow- 

 ing : — discovery of Pallavicinia Lyellii in Austria ; Marsupella erythro- 

 rhiza, an addition to the Belgian flora ; new stations for rare mosses in 

 the Riesengebirge ; remarks on Grimaldia carnica C. Mass. ; Pallavicinia 



* Ann. of Bot., xx. (1906) pp. 83-108 (2 pis., 8 figs.), 

 t Journ. of Bot., xliv. (1906) p. 72. 



X Trans. Nat. Hist. Soc. Glasgow, vii., 1 (1904) pp. 52-8. 

 § Trans. Edinb. Field Nat. Micr. Soc, v. (1905) pp. 227-8. 

 || Ann. Scot. Nat. Hist., 1905, pp. 94-6. 

 1 Proc. R. Soc. Tasmania, 1902 (1903) pp. 115-32. 

 ** Oesterr. bot. Zoitscbr., lvi. (1906) pp. 20-7. 



