870 SUMMARY OF CURRENT RESEARCHES RELATING TO 



St a ii i; l, II. — Ueber die Beziehung der Wanddicke der. Arterien zum Blutdruck. 

 (On the relation of the thickness of arterial walls to the blood pressure.) 

 [Method of measuring, supra, p. 864.] 



Ardt. f. An it. u. Physiol. (An it. AUheU.), 1886 pp. 45-63 (12 figs ). 



Stein, S. T. — Das Licht im Dienste wissenscb.afticb.er Forschung. Band II. 



Heft 4. Specieller Theil III.-V. Die Photographic im Dienste der Astronomie, 



Meteorologie and Physik. (Light in furtherance of scientific research. 



Vol. II. Part I. Photography in astronomy, meteorology, ami physics.) 



2nd ed., viii. and 192 pp.. 135 figs, and 1 phot. (8vo, Halle a S., 1886). 

 Stow ell, C. H. and L. R. — Valedictory — Introductory. 



[Announcement of retirement from the editorship of the journal, and 

 introduction of new editors. Also " salutatory " note of new editors.] 



The Microscop.; VI. (1880) pp. 172-4. 

 „ „ „ At last. 



[On the retirement of the editor of the Amer. Mod. Micr. Journ.] 



The Microscope, VI. (1886) pp. 174-6. 

 Sydow, P. — Anleitung zum Sammeln der Kryptogamen. (Guide to the col- 

 lection of Cryptogams.) 



[Contains " The Microscope'' pp. 6-19. Also me isuring, drawing, mount- 

 ing, and culture methods.] 



iv. and 144 pp , 10 figs. (8vo, Stuttgart, 188.3). 

 Vignal, W. — Chambre chaude a regulateur direct pour le Microscope. (Hot 

 stage with direct regulator for the Microscope.) [Pust.~\ 



Arch, de Ph siol. Norm, et Path , VI. (1885) pp. 1-10 (2 figs.). 



X i i>.-, C. — Neue Mikroskop-Objective und Oculare aus Specinl-Gl'asern des Glas- 



technischen Laboratoriums (Schott & Gen.). (New Microscope objectives 



and eye-pieces of special kinds of glass from the glass manufactory of Schott 



and partners.) [Supra, p. 849.] 14 pp. (8vo, Jena, 1886). 



0. Collecting 1 , Mounting 1 and Examining Objects, &c* 



Preventing the crumpling up of the Germinal Disc. t— Prof. 

 G. Komiti has been endeavouring to find a means to prevent the 

 crumpling up of the germinal disc of the hen's egg, which occurs 

 during hardening in osmic acid or in osmio-chrom-acetic acid. 

 Foster and Balfour had recommended for this purpose, to allow the 

 germinal disc to get slightly dry on a glass plate and to place the 

 embryo thus fixed on the glass plate in the hardening medium. 

 Romiti substitutes a watchglass for the glass slide ; the embryo is 

 placed on the convex surface, and isolated in the blastoderm in salt 

 water or in very dilute bichromate of potash. 



New Method for demonstrating Karyokinetic Figures.} — Prof. 

 G. Bizzozero has devised a new method for demonstrating karyo- 

 kinetic figures. For the iodine solution (Gram's method) is sub- 

 stituted a 1 per 1000 solution of chromic acid. The sections, made 

 from material hardened in alcohol, are left for 5-10 m' in the 

 Ehrlich solution (gentian violet 1, alcohol 15, anilin oil 3, water 80), 

 then, having been rapidly washed in absolute alcohol, are trans- 



* This subdivision contains (1) Collecting Objects ; (2) Preparing, (a) in 

 general, (b) special objects ; (3) Separate processes prior to making sections ; 

 (4) Cutting, including Imbedding and Microtomes; (5) Staining and Injecting ; 

 6) Mounting, including preservative fluids, cells, slides, and cabinets ; (7) Ex- 

 amining objects, including Testing ; (8) Miscellaneous matters. 



t Boll. Soc. Cult. Sci. Med. Siena, iii. (18S5) (Sepr. Kepr.) pp. 5-6. 



X Zeitschr. f. Wiss. Mikr., iii. (1886) pp. 24-7. 



