468 INDEX. 
Wochler (M.) on a peculiar acid formed by the combination of 
cyanogen with the alkalis, 421, 422 
Wollaston (Dr. W. H.), observations of, on the concentric adjust- 
ment of a triple object glass, 163; on the finite extent of 
the atmosphere, 167 
Yeats, (Dr.), Hints of, on a mode of obtaining soft water at 
Tunbridge-Wells, 345—352 ; observations of, on lead and 
its deleterious effects, 352, 353 
Zeise (Dr.) on a new class of compounds of sulphur, 433—435 
Zodiac of Dendera, remarks on, 402—410, 
LONDON: 
PRINTED BY WILLIAM CLOWES, 
Northumberland-court. 
