ADDENDA 153 



1681. Selfakov, N. J. 



1936. To what class of symmetry does ordinary ice belong? C. R. 



Akad. nauk. n.s. l(7):293-294. [Experiments on distilled 

 water.] 



1682. Shipchinski, V. 



1917. Kratkii otchet o rabotakh na r. Severnol Dvine v ralone 



Arkhangel'skogo porta zimofii 1915-16 g., proizvedennykh 

 "fSentraFnoI stanfsiei Gidro-meteorologicheskol sluzhby 

 Severnogo Ledovitogo Okeana i Belogo Morfa i pred- 

 varitel'nyl plan rabot na zimu 1916-17 g. (Brief sketch of 

 the work on the North Dvina River in the region of Arch- 

 angel during the winter of 1915-16, carried out by the 

 Central stations of the Hydro-meteorological service of the 

 Arctic Ocean and White Sea, and preliminary plans for 

 1916-17.) Leningrad. 36 p. 2 charts. 



1683. Shipchinski, V. 



1917. Vskrytie r. Severnoi Dviny v 1917 godu i organizatsifa 



sluzhby po preduprezhdeniiil o momente vskrytiia reki u 

 G. Arkhangel'ska. (The breaking up of the North Dvina 

 river in 1917 and organization of the service to warn of the 

 moment of breaking up of the rivers near Archangel.) Izv. 

 Arkhangel'sk. obshch. izuch. russ. severa. 6:232-243. 



1684. Shostakovich, V. B. 



1917. Donnyi led. (Anchor ice.) Priroda. 1917:158-174. 



1685. Shuleikin, V. V. 



1927. Metod opredelenifa udel'nogo vesa I'da. (Method of deter- 



mination of the specific weight of ice.) Zh. prikl. fiz. 

 4(3) :75-77. 



1686. Smellie, J. and A. Watt. 



1916. On a curious case of "ground-ice". J. Scot. met. soc. Edinb. 



17:166-173. [Anchor ice in Scotch lakes.] 



1687. Sovetov, S. A. 



1917. Fiziko-geograficheskii ocherk Onezhskago Ozera. (Physico- 



geographical sketch of Lake Onega.) Zap. gidrogr. 41 :231- 

 262, 431-562. illus., tables, charts, diagrs. [Ice cover of 

 Lake Onega, pp. 527-552.] 



1688. Timonov, V. V. 



1944. vozmozhnosti uluchshanifa i uproshchenifa schislenifa pri 



plavanii vo I'du. (On the practicability of improvement 

 and simplification of reckoning for navigation of ice.) Zap. 

 gidrogr. 1944(1) :142-148. 



1689. Trofimov, A. B. 



1935. Podlednala i podvodnafa osveshchennost' v verkhnikh gori- 



zontakh moria. (The sub-ice and sub-water illumination 

 in the upper strata of the sea.) Zh. geofiz. 5:444-465. 

 [For White and Caspian seas.] 



1690. U.S. Army air forces. Weather information branch. 



June 1943. Glossary of ice terms, with Russian equivalents. 22 p. 

 (Rep. 386.) 



