ALGOLOGICAL LITERATURE OF 1899 189 
time from the Pacific. In giving the distribution of this alga Prof. 
Saunders omits Scotland, where it was found in 1892 by Prof. 
Schmitz and Mr. George Murray, but possibly he regards the 
‘North Atlantic’ as including the Kyles of Bute! Mr. Murray 
sets forth Prof. Schmitz’s views on the systematic position of 
Halicystis in a paper in Phyc. Mem. pt. ii. p. 47, 1898, where 
he mi i f 
nute structure of this genus is compared with that o 
as epar 
found at Point Lobos. ten miles south of Monterey Bay; and, 
except that the Pacific plant is smaller, it agrees in all respects 
with the Atlantic plant of Prof. Farlow (Mar. Alg. New Engl. p. 60). 
‘* Cladophora-Studien,” by Dr. F. Brand, in Bot. Centra/blatt, 
Bd. lxxix. no. 5 et seq. 1899, embodies the result of the author’s 
work during several years on this much-entangled genus. F 
Brand begins by pointing out the hopeless confusion which has 
arisen in the identification of species, owing to the contradictory 
diagnoses given by various authors. Reference to herbarium speci- 
species. For the preparation of a type for examination he recom- 
mends the Lagerheim method as described in Hedwigia, 1888, p. 58. 
r 
n 
Cladophoracee. Dr. Brand divides his paper under the following 
headings :—‘‘ Physiological and biological conditions”; ‘‘ Formation 
of the Cladopora thallus and the law of evection”’ ; ‘‘ Attachment, and 
formation of zoospores”; ‘‘ Inner structure”; “‘ Various accidental 
peculiarities’’; ‘ Points of diagnostic importance’’; ‘* Systematic 
of evection; the relative preponderance of apical or intercalary 
growth ; the maximum thickness of the main stem the mini- 
mum thickness of the branches, leaving isolated exceptions out of 
L 2 
