112 100 % o Erratum ~ o ~ o o ~176 o o 60 4O /o o//O e' 2 4 6 8 1~) 12 14 h Fig. 3. Mortality of Molgus c/. littoraEs after chilling to --5 ~ Centigrade. Abzissa: time in hours. Ordinate: Percentage of dead specimens, n =358. Black dots represent mean values subzero t e m p e r a t u r e s m a y occur a l m o s t e v e r y night, h a r d l y ever will frost be e n c o u n t e r e d during arctic summer. I n t h e s u m m e r of 1968 t h e resistance to cold of active animals on S p i t z b e r g e n ( L o n g y e a r b y e n ) was i n v e s t i g a t e d . The animals were collected in t h e field, a c c h m a t e d to 0~ for 5 - - 1 0 miu, p u t into vials a n d cooled to - - 5 ~ or - - 1 0 ~ in a cooling b a t h . A f t e r 2.5 m i n t h e t e m p e r a t u r e inside t...