350 H. W. Wiley—Automatic Filtering Apparatus. 
elevation—this elevation apart from general a continental eleva- 
tion being deni 
of sediment added to the surface. The world abounds in cases 
in which part of the sea-border deposits of a period are now 
but little away from the old level, while other portions are 
Art. XXXIX.—On an Automatic Filtering Apparatus; by 
Harvey W. Wiey, M.D., Professor of Chemistry, Indiana 
Medical College. 
WHILE studying quantitative analysis in the laboratory of 
the Lawrence iene School, I was led to devise some plan 
by which time could be economized: in filtering and washing 
precipitates. 
