ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 72o 



(5) Mounting, including Slides, Preservative Fluids, &c. 



Sticking of Celloidin Sections.* — K. v. Tellyesniczky suggests 

 that, instead of using Mayer's glycerin-albumen as in Argutinsky's 

 method, albumen simply diluted should be employed, as the white of 

 one egg diluted to 100 c.cm. with distilled water and filtered. This he 

 claims gives a much smoother and more uniform surface of coagulated 

 albumen than Mayer's glycerin-albumen, and does not stain appreciably. 

 He also advocates the use of mica plates for mounting celloidin sections. 



(6) Miscellaneous. 



Ink for Writing on Glass.f — Dissolve 20 parts resin in 150 parts 

 of alcohol, then add, drop by drop, stirring all the while, a solution of 

 35 parts borax in 250 parts of water. Finally dissolve 1 part methylen- 

 blue in the mixture. 



Metoalf, H., & G. G. Hedgcock — New apparatus for phytopathological work. 

 1. A transferring " Oese." 2. Apparatus for growing seedlings and small plants 

 under sterile conditions. Journ. App. Micr., vi. (1903) pp. 2493-5 (2 figs.). 



Dickerson, W. S. — Useful modification of the life-box. 



[This consists in substituting for the ordinary cover-glass of the life-box, 

 a thin glass perforated by a small opening near one margin.] 



Tom. cit., pp. 2499-500 (1 fig.). 



Metallography, etc. 



Evolution of Structure in Metals. J — M. G. Cartaud has been able 

 by means of picric acid in acetone to etch the surfaces of soft metals 

 such as lead, zinc and tin. He gives his reasons for thinking that the 

 cellular surface structure so displayed is antecedent to the perfectly 

 developed crystalline structure of the interior. The cellular structure 

 is, as it were, embryonic ; the crystalline, adult. 



Behkens, H. — Notes from the Microchemical Laboratory at Delft. 



[1. Movements in metals under annealing. 2. On tinning and soldering. 

 3. Etching by means of electricity. 



Iron and Steel Mag., viii. (Aug. 1904) pp. 150-5. 



Campbell, "W. — Change of structure in the solid state. 



[A useful resume of our present knowledge of changes in metallic structure 

 during and after solidification. 



Journ. Franklin Inst, clviii. (Sept. 1904) pp. 161-84 (34 figs.). 



Shepherd, E. 8. — Some neglected details in the experimental study of alloys. 



Iron and Steel Mag., viii. (Sept. 1904) pp. 222-31 (6 photos). 



* Eine einfache und zuverlassige Methode Celloidinserien mit Wasser und 

 Eiweiss aufzukleben. Arch. Mikr. Anat., Bd. lv. (1900). See also Anat. Anzeig, 

 xxv. (1904) p. 182. 



f Pharmaceutical Era, Sept. 1903. See Journ. App. Micr., vi. (1903) p. 2636. 



t Comptes Kendus, cxxxix. (1904) pp. 428-30. 



