vi                                     CONTENTS.
 

CHAPTER VIII.

PAGE

DECREASE  OP  TEMPERATURE  WITH   ELEVATION..........        84

ANEROID  BAROMETER :   BLACKENED  BULB  THERMOMETER.......        90

LINES   IN   THE   SPECTRUM :   TIMES   OP  VIBRATION   OF  A   MAGNET.....        91

DIFFERENT  DIRECTIONS   OF   THE  WIND *.   VELOCITY   OF   THE   WIND      ....        92

PHYSIOLOGICAL   OBSERVATIONS :   PROPAGATION   OF   SOUND.......        94

CHAPTER rX.

THE  HIGH   REGIONS....................        94

APPEARANCE   OF   THE   EARTH   VIEWED   FROM   A   BALLOON........        99
 

PART 11.
TRAVELS OE M. 0. ELAMMAEION.

PRELIMINARY CHAPTER,

A  SKETCH  OF  SCIENTIFIC  BALLOONING  FROM   1783   TO   1867   .,,...      l05

CHAPTER 11.

MY  FIRST  AERIAL  VOYAGE, ASCENSION  DAY,   1867       ,     ,     *......122

CHAPTER III.

MY   SECOND   VOYAGE,    9TH   JUNE,    1867—DESCRIPTION   OF   THE   BALLOON-
CONDITIONS  OF  SECURITY  REQUIRED   FOR AN  AERIAL  VOYAGE .     .     .     .      ] 32

CHAPTER lY.

MORNING  ASCENT—THE  BLUB  SKY—THE  RESPIRABLE  ATMOSPHERE       .     ,     ,      143

CHAPTER V,

A    VOYAGE    IN    TWO    STAGES—EVENING :    ST.   CLOUD,   VERSAILLES,    DREUX.

NIGHT :    VERNEUIL,   LAIGLE,   DESCENT  INTO   THE  RIVER  ORNE     .     .     ,-     .157

CHAPTER VI. .

'FROM  PARIS  TU   LAROCHEFOUCAULT-ANGOULEME—SIXTH  VOYAGE     ,     .     .     ,     172