ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 693 



naked eye, the second all microscopic species. Every specimen should 

 be carefully labelled with the name of the locality, and the nature of its 

 habitat. The whole plant should be gathered, including its base. The 

 robust specimens may be hung up to dry on a line in the shade, or laid 

 out on some flat surface. More delicate plants are preferably to be 

 spread out on a piece of sized paper, covered with calico and slightly 

 pressed between blotting paper, which, as well as the calico, should be 

 changed often, to insure speedy drying. When the specimens are dry, 

 the calico is removed, and the sheets are packed on one another. A 

 better plan is to float specimens in sea-water, and to slide a piece of 

 paper underneath the plant, which can then be teased out and left on 

 an inclined plane to drip. If sea-water be not available, a solution of 

 35-40 grm. of sea salt to every litre of water may be used instead. 

 Another method is the employment of salt as a preservative. When 

 fresh specimens have finished dripping, they are placed in a stone vase in 

 alternate thin layers of algae and salt, and the water that comes away 

 having been carefully removed, the vessel is hermetically sealed. This 

 method gives good results for a short journey ; for a longer period it 

 would ruin the specimens. 



For microscopic algae a quick drying in the open air on a sheet 

 of sized paper is best, without calico or other pressure. Diatoms and 

 Desmids may be placed in a drop of water on the paper and allowed to 

 dry naturally. As regards the employment of liquids for preservation 

 of algae, the author deprecates the use of them, except for portions of 

 plants destined for anatomical research. For these he recommends 

 ( .)0 p.c. alcohol to which he adds a certain quantity of glycerin, or a 

 solution of picric acid. 



Notes on Algae.* — F. S. Collins continues his notes on various 

 species of marine algae, and in the present contribution treats of Gobia 

 baltica, Myrionema QorunncR, Lithoderma fatiscens, Conchocelis rosea, 

 Rhodomela lt/copodioides,Rhodochorton penicilliforme, Rhododermis elpf/ans, 

 R. parasitica, and R. Georgii. 



Fresh-water Algae of Bulgaria.f — S. Petkoff publishes a list of 

 fresh-water algae new tar Bulgaria, collected in six different localities. 

 Sixty-one species are enumerated, belonging to Schizomycetes, Florideae, 

 Cyanophyceae, and Chlorophyceae. This is the author's fifth contribution 

 to a study of the fresh-water algae of this country. 



Sicilian Algae 4 — F. Cortesi, in his " Illustrazione dell' Erbario 

 Borgia," gives a list of 44 marine algae from Catania, re-determined by 

 G. B. de Toni, and preserved in the neglected herbarium which was 

 put together by Count Cesare Borgia, who died in 1837. The best 

 represented genus is Gystoseira, 9 species of which are recorded. The 

 old names and notes on the labels are all given. 



Nereocystis Luetkeana.§— T. C. Frye has studied this alga in its 

 native habitat, and makes some interesting notes on it. The report of a 



* Rkodora, viii. (1906) pp. 157-61. 

 t Nuov. Notar., xvii. (1906) pp. 151-61. 

 \ Annali di Botanica, iv. (1906) pp. 262-7. 

 § Bot. Gazette, xlii. (1906) pp. 143-6. 



