ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 473 



Note upon Hookeria papillata.* — E. 6. Paris shows that No. 93 

 of the Cuban Mosses gathered by C. Wright (1856-8) was wrongly 

 referred by Sullivant to Hookeria papillata Mont. ; that it is really H. 

 crenata Mitt., which species Mitten founded upon No. 92 of the same 

 cxsiccati (wrongly referred to H. Merkelii Hornsch). Sullivant, says 

 Paris, made the same blunder over Montagne's species in connection with 

 a specimen collected by the Wilkes Exploring Expedition, — a specimen 

 which he had previously distinguished as H. oblongifolia. 



Fruit of Campylopus polytrichoides described, f — A. Luisier has 

 brought together the few facts hitherto known about the sporogonia 

 of Campylopus polytrichoides, old material only, collected in Portugal. 

 In the past few years further examples have been found on the coast 

 of Portugal. And Luisier, having himself been fortunate enough to 

 find some of these specimens, has drawn up a description of pedicel, 

 capsule, calyptra, and peristome, and illustrates it with some figures. 



Abnormal Archegonium in a Hepatic.f— F. M. Andrews describes 

 and figures an abnormal form of archegonium observed in Porella 

 platylla. It contained two perfectly formed egg-cells, each with a row 

 of canal cells. He also figures some branched elaters found in the same 

 species. 



JThallophyta. 



Algae. 



(By Mrs. E. S. Gepp.) 



Nomenclature of Algae.§ — G. B. de Toni has been appointed secre- 

 tary of the algological section of the special committee appointed by the 

 Botanical Congress of Vienna in 1905, to consider the subject of Crypto- 

 gamic Nomenclature, and report to the Congress of Brussels in 1910. 

 He asks for the opinions of algologists upon general problems or 

 particular cases of algological nomenclature, as an aid to the settlement 

 of the priority of generic names, and the best way of settling the claims 

 of various authors. He gives some instances of changes attempted by 

 Trevisan, Ruprecht, 0. Kuntze ; of objections raised by Le Jobs ; of 

 views advanced by Nordstedt — for instance, that for the Desrnidiea? the 

 starting-point should be " The British Desniidieas " of Ralfs (1848). 



Fixation of Nitrogen by Algae. || — B. Heinze gives the results of 

 his researches into the question of the fixation of free nitrogen by algae, 

 and supplies a summary of the literature of the subject. Some bacteria 

 have this property, but fungi have not. Some algae, such as Nostoc, 

 possess the power to a certain degree ; association with such nitrifying 

 organisms as Azotobacter, however, greatly promotes the function. 



* Rev. Bryolog., xxxv. (1908) p. Gl."" 



t Bull. Soc. Portugaise Sci. Nat., i. (1907) pp. 89-91. 



J Bot. Gazette, xlv. (1908) p. 340 (figs.). 



§ Nuov. Notar., xix. (1908) pp. 67-71. 



|| Centralbl. Bakt., xvi. 2 (1906) pp. 640-53; 703-11. 



