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Show 334 C. MAGONO and C. W. LEE team deeply mourns his passing but still holds him in the highest respect. This work was, made possible by the use of about thirty thousands microscopic photographs of snow crystals which were taken by the . members of the Cloud Physics Group; Drs. D. Kuroiwa, T. Kobayashi, T. Okita, K. Itagaki, K. Higuchi, K. Orikasa, G. Wakahama, J . Muguruma, T. Takahashi, K. Kikuchi, T. Nakamura and 23 students who were in our laboratory. The authors wish express their gratitude to our colleagues. Finally they also wish to thank Dr. Shimizu who offered his microscopic photographs of ice crystals in Antarctica. This work was supported by the Educational Ministry of Japan and supported partially by National Science Foundation. References NAKAYA, U.: Snow Crystal, natural and artificial. Harvard Univ. Press ( 1954) 76. GOLD, L. W. and B. W. POWER: Dependence of the forms of natural snow crystals on meteorological conditions. Jour. Met., 11 ( 1954) 35- 42. MURAI, G.: The relation between the crystal type of falling snow particles and the meteorological conditions of the upper air layer ( in Japanese). Teionkagaku, Ser. A, 15 ( 1956) 13- 32. GRUNOW, J.. Observation and analysis of snow crystals for producing the suitability as aerological sonde, I. Contract No. DA- 91- 591- EUC- 1030 ( 1959). 5) GRUNOW, J.. Ibid, II ( 1960). 6) NAKAYA, U., M. HANAJIMA and J. MUGURUMA: Physical investigations on the growth of snow crystals. Jour. Fac. Sci., Hokkaido Univ., Ser. II, 5 ( 1958) 87- 118. HALLETT, J. and B. J. MASON: The influence of temperature and supersaturation on the habit of ice crystals grown from the vapor. Proc. Roy. Soc, A. 247 ( 1958) 440- 453. KOBAYASHI, T.: On the habit of snow crystals artificially- produced at low pressures. Jour. Met. Soc. Jap., Ser. II, 36 ( 1958) 193- 208. KOBAYASHI, T.: Experimental researches on the snow crystal habit and growth by means of a diffusion cloud chamber. Jour. Met. Soc. Jap., 75th Ann. Vol., ( 1957) 38- 47. 10) KOBAYASHI, T.: The growth of snow crystals at low supersaturations. Phil. Mag., 6 ( 1961) 1363- 1370. 11) MAGONO, C. and colleagues: Preliminary investigation on the growth of natural snow crystals by the use of observation points distributed vertically. Jour. Fac. Sci., Hokkaido Univ., Ser. VII ( Geophysics), 1 ( 1959) 195- 211. 12) MAGONO, C. and colleagues: Investigation on the growth and distribution of natural snow crystals by the use of observation points distributed vertically, II. Jour. Fac. Sci., Hokkaido Univ., Ser. VII, 1 ( 1960) 267- 282. 13) MAGONO, C. et al: Ibid. Ill, Ibid ( 1962) 375- 391. 14) SHIMIZU, H.: " Long prism" crystals observed in the precipitation in Antarctica. Jour. Met. Soc. Jap., Ser. II, 41 ( 1963) 305- 307. |