Chapter

 1 VI    |         from the atmosphere, the pressure of which may render it luminous
 2 XI    |     answered the purpose, as the pressure would increase during our
 3 XI    |          is generally known as a pressure gauge. — TRANS.~[2] Ruhmkorff’
 4 XII   |         of his own, too, applied pressure, and was again refused by
 5 XIV   |    fluids, being no longer under pressure, go off by way of the crater
 6 XVIII | Professor, “we have now only the pressure of our atmosphere, and I
 7 XVIII |     atmosphere should exceed the pressure ascertained at the level
 8 XVIII |        that this ever-increasing pressure will become at last very
 9 XXIII |          without succeeding. The pressure was too great, and our efforts
10 XXV   |        we are under considerable pressure.”~“Very good; so you see
11 XXV   |      water?”~“Of course, under a pressure of seven hundred and ten
12 XXV   |    evident that the air, under a pressure which might reach that of
13 XXVII |        shoulders with a dreadful pressure. I felt crushed.~I tried
14 XXX   |         that under so powerful a pressure of the atmosphere there
15 XXX   |     luminous because of the vast pressure that weighed upon it; while
16 XXXI  |         of the heavy atmospheric pressure on the surface, you will
17 XXXII |     reproduce themselves under a pressure of four hundred atmospheres,
18 XXXIII|         capable of resisting the pressure of the great volume of water
19 XXXIV |        attribute to the variable pressure of the steam accumulated
20 XLII  |          air is condensed by the pressure of this column of water
21 XLIII |         generated by the extreme pressure of confined vapours, was