ZOOLOGY AND BOTANY, MICROSCOPY, 1 T< . 7'.' 



Diatoms of Pas-de-Calais.— C. Cepede* furnishes a contribution to 

 the study of the marine diatoms of Pas-de-Calais,, not only giving an 

 enumeration of the species with synonymy and habitats, but also 

 treating the subject from the point of view of oceanography and 

 pisciculture, owing to the well known fact that the diatoms serve as food 

 to many marine creatures, and directly or indirectly to such importanl 

 fishes as the sardine. He gives a list of twenty-two diatoms found in 

 the intestine of the sardine. He also describes and figures a new 

 plankton-net in which the closure is effected by means of a lever- 

 stopper, t 



Diatoms of Connecticut.!— W. A. Terry publishes some lists of 

 Connecticut diatoms representing material supplied by him to Tempere 

 for inclusion in his " Diatomees du Monde entier," issued in the form of 

 microscope-slides. The lists represent the floras of Ice Pond, New 

 Britain ; Fall Mountain, Bristol : Bunnel's Pond, Bristol ; and the 

 corresponding slides have already been issued by Tempere. 



Mongolian DiatomsJ — E. Oestrup makes a contribution to a know- 

 ledge of the diatom-flora of the Kossogol Lake in North-west Mongolia, 

 based upon thirteen plankton-samples and twenty-four bottom-samples 

 obtained by C. H. Ostenfeld. The author enumerates 168 species, 

 eight of which are new to science. In a distribution-table he compares 

 this list with the diatom-floras of Lake Baikal, middle Asia, and Lake 

 Balaton. 



Danish Peridinieae.il — 0. Paulsen gives an account of the Peri- 

 diniales of the Danish waters, prefacing the enumeration with an 

 analytical scheme of the genera. Among the species are nine proposed 

 as new. 



Siamese Plankton.^" — E. Lemmermann gives an account of the 

 phytoplankton collected at the mouth of the Menam, near Paknam, in 

 Siain, by H. Schauinsland in 1006. The list contains 94 forms, com- 

 prising Bacillariacege (61), Peridiniere (5), Silicoflagellataj (2), Flag- 

 ellate (12), Conjugatas (3), Chlorophyceai (9), Schizophycese (2). The 

 author discusses the influence of the brackish water ; makes critical 

 remarks on some of the forms ; draws up some general conclusion < ; 

 and compares the plankton with that of the Yang-tze-kiang. 



Studies on Ceratium. — C. A. Kofoid ** describes the exuviation, 

 autotomy and regeneration in Ceratium, from observations made at the 

 Marine Biological station at San Diego in California. 



The same author ft publishes notes on some obscure species of 

 Ceratium. 



Marine Biology.:^ — J. Johnstone publishes a volume on "Conditions 

 of Life in the Sea : a short account of Quantitative Marine Biological 



* C.R. Ass. Fran?. Avanc. Sci. Reims (Paris, 1908) pp. 536-63. 



+ Tom. cit., pp. 770-3. J Rhodora, x. (1908) pp. 179-81. 



§ Hedwigia, xlviii. (1908) pp. 74-100 (2 pis.). 



|| Meddel. fra Komm. f. Hafunders, i. No. 5 (Kobenhavn, 1907) 33 figs. 



1 Hedwigia, xlviii. (1908) pp. 126-39 (pi.). 



** Univ. California Publications (Zool.) iv. (1908) pp. 345-86 (figs.). 

 tf Tom. cit., pp. 387-93. JJ Cambridge University Press, 190 



