ALGOLOGICAL LITERATURE OF 1899 91 
that Ectocarpus crinitus Carm. may on further investigation prove 
to be the same plant as A.pusillus, and that even A. Vidovichii may 
not be specifically distinct from ‘‘the synthetic species’ Acineto- 
spora crinitus. 
The next section of the paper deals with the nature of the two 
ms of monospores described in Tilopteridacea, those with a amet 
nclens, and those with four nuclei enclosed within ~ one mem 
ra 
multiplication of the nuclei in the one case shows merely a com 
mencement of germination. Hee mead disfavours the ios of the 
monospore with four nuclei being an oosphere, and gives very 
that Acinetosporee and Heloise 2 Tilo pteridec) shou 
regarded as merely two tribes in the family a pinidaneny ‘bat 
should constitute two distinct families. The paper closes with a table 
showing the connecting links between Hctocarpus and Cutleriacee. 
A further most interesting and valuable contribution to phyco- 
hie Roca by M. Sauvageau—‘ Les Cutlériacées et leur 
alternance de générations ’—is ‘publi shed in the Ann, Sci. Nat 
sér, 8. net x. Dec. 1899. Although this order has attracted. the 
attention of many botanists from M. Thuret in 1850 onwards, 
there still remain points for further investigation ; — are clearly 
set forth in this paper, while fresh facts are “added to 
of the subject. It would be im ssible in a small com ne 9 to give 
any adequate account of this paper, for each chapter is full of side 
suggestions, as is only natural when such an interesting subject is 
dealt with by such a teen ie hand. To quote the author 
in its complexity, is fataeoete not only to the algologist, but to 
all those who occupy themselves with general biology; it presents 
a special interest as regards the many points of view of sexuality 
and of parthenogenesis, of alternation of generations and of 
morphism, of the influence of external conditions on development, 
and of Rardin distribution.” 
rst chapter is devoted to a résumé of previous work on this 
suiijiek i Prof. Reinke, M. Falkenberg, M. de Janezewski, Dr. 
Kuekuck, and Mr. Church. The second eal with the Cutleriacea 
e Gulf of — on the flora of which co = . Sauv, _ 
He records from pi vedio where he eri ae three species of 
Cutler iacee@ which possess sexual organs: Cutleria adspersa, C. multi- 
a, and Zanardinia collaris. This place and Tangier are, according 
