ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 137 



Smith, H. L. — Memoir of C. H. Spencer. 



Proc. Ainer. Soc. Micr., 5th Ann. Meeting, 1882, pp. 49-74 (Portrait). 

 Spencer, C. A., Memoir of. See Smith, H. L. 



Steaen's (0. H.) Incandescent Electric Light applied to microscopical illumina- 

 tion. [Supra, p. 29.] Engl. Mech., XXXVI. (1883) p. 403. 

 Stowell, C. H. and L. R.— Criticism of the prices asked for some second-hand 

 apparatus. The Microscope, II. (1882) p. 176. 

 Stowell's (C. H. and L. R.) election as honorary members of the Aurora Micro- 

 scopical Club. The Microscope, II. (1882) p. 166. 

 Suffolk, W. T. — Standard sizes for eye-pieces. 



[Calling attention to the recommendations of the Committee, II. (1882) 



p. 595.] Sci.-Gossip, 1883, p. 17. 



SuNDELL, A. F. — Aenderungen in der Brennweite eines achromatiscben Objectivs 



durch Temperatur-variationen. (Changes in the focal length of an achromatic 



objective through variations of temperature.) 



[Experiments on Telescopic Objectives. Description of Apparatus. Differ- 

 ences of 28*1° C. and 31-9° C. produced changes of 1*72 mm. and 

 2 '05 mm.] 



Zeitschr. f. Instrumentenk., III. (1882) pp. 410-1, 

 from Astronom. Nachr., No. 2450. 

 Tayloe, G. C. — An Improved Lamp for use with the Microscope. 

 [Vol. II. (1882) p. 866.] 



Proa. Amer. Soc. Micr., 5th Ann. Meeting, 1882, pp. 14 and 273. 

 Thoulet, — . — Heating Apparatus for the Microscope. [^Post.'] 



Aimer. Natural, XVII. (1883) p. 76, from Bull. Soc. Mineral. France. 

 Tdttle, Prof. A. H.'s, Address delivered before the new Section of Histology and 

 Microscopy of the Amer. Assoc. Adv. Sci. at Montreal. 

 [In justification of the formation of the Section.] 



Amer. Mon. Micr. Journ., III. (1882) pp. 205-10, 218. 

 "Walmsley, W. H. — Micro-photography with dry-plates and lamp-light and its 

 application to making lantern positives. \_Post.^ 



Proc. Amer. Sue. Micr., 5th Ann. Meeting, 1882, pp. 179-82, 273-5, 

 Ward, E. H. — Report of Committee on Eye-pieces. [Vol. II. (1882) p. 853.] 



Proc. Amer. Soc. Micr., 5th Ann. Meeting, 1882, p. 16. 

 „ „ Report of National Committee on Micrometry. 

 [A ruling upon a platino-iridium bar has been tested by the Coast Survey, 

 and will soon be in the bands of the Committee.] 



Proc. Amer. Soc. Micr., 5th Ann. Meeting, 1882, p. 16. 

 Watson's Lithological Microscope. 



[Described, Vol. II. (1879) p. 470.] 



Amer. Mon. Micr. Journ., III. (1882) pp. 226-7 (1 fig.). 



/8. Collecting, Mounting and Examining Objects, &c. 



Carbonic Acid as a Narcotic for Marine Animals.* — Dr. H. Fol 

 recommends carbonic acid as the best narcotic for marine animals so 

 as to preserve their form and habit. The ordinary narcotics, if in 

 small doses, do not render the animals immovable, whilst in large 

 they act as poisons. The same applies to the solutions of ether, 

 chloroform, &c. 



If the sea-water in which a Medusa is swimming is saturated with 

 carbonic acid the animal soon becomes completely immoyable and 

 insensible, retaining at the same time its natural appearance. If it is 

 left in an hermetically closed vessel it will remain hours and even days 

 unchanged, but immediately becomes lively again when it is placed 

 in pure sea-water. Starfishes remained immovable four days, and 



* Zool. Anzeig., v. (1882) pp. 698-9. Bull. Soc. Belg. Micr., ix. (1882) 

 pp. 35-36. 



