PHOTOGBAPHS OF CLOUDS 

 BY COMMANDER D. WILSON-BAEKEB, R N.E.. F.R.S.E., F R.MET.SOC. 



Fig. 7.— CIERaS. 



Fig. 8.-HIGH STR.\TUS (MACKEREL SKY). 



This was followed by a gale in 12 hours. 

 Blocks kindly lent by Editor of " Knowledge." 



