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SPECIFIC GRAVITY OF GASES AND VAPOURS.
1 litre of hydrogen at o° C. and under a pressure of 760 m.m. of mercury, weighs o'0896 gramme = I crith. 1 litre of oxygen (c.w.=16) under the same circums. weighs 16 criths=0'0896X16=1*4336
1 litre of nitrogen (c.w. = 14)
litre of iodine vapour (c.w.=
1 litre of water vapour (m.w.= 18)
=00896X14=1°2544 =0*0896 X 127 = 11*3792
14 criths 127 criths
9 criths =0°0896×9=0'0864
1 litre of hydrochloric acid gas (m. w. = 36'5) 1 litre of dry air
22 criths=0'0896 X 22 = 1'9712 85 criths=0'0896 x 8'5=0*7616 $5=18°25 criths=0 0896 × 18°25 =1*6352 14'42 criths = 1°2932
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CICERO-THE SECOND PHILIPPIC ORATION. From the German of Karl Halm. Edited, with Corrections and Additions, by JOHN E. B. MAYOR, Professor of Latin in the University of Cambridge, and Fellow and Classical Lecturer at St. John's College. New edition, revised. 55.