Illustrations xv 



FACING 



mat 



GATHERING JASMINE NEAR GRASSE (ALPES-MARITIMES) . . . 747 



A Six-PiPE WATER TRACK SUPPLYING WATER-POWER TO THE ALUMINIUM 



WORKS AT KINLOCHLEVEN, IN ARGYLLSHIRE (Coloured Illustration) 718 



DISTILLATION OP ORANGE-BLOSSOM FOR PERFUMES .... 752 

 Photos: Jacques Boyer, Paris. 



SORTING MILLIONS OF ROSES ......... 752 



TAPPING A RUBBER-TREE IN THE PUTUMAYO DISTRICT .... 753 



PAPER FROM WOOD-PULP ......... 754 



WHAT MODERN EXPLOSIVES CAN DO ..... . 755 



Photo: West & Son, Southsea. 



A NATURAL WELL OF PETROLEUM GUSHING UP FROM THE EARTH . . 750 

 Photo: James's Press Agency. 



CANDLE MOULDING .......... 757 



Reproduced by permission of Price's Patent Candle Co., Ltd. 



DAVY LAMP ............ 757 



Photo: L. E. A. 



THE CUMULO-NIMBUS, A DENSE RAIN-CLOUD OF CUMULUS FORM . . 764 



THE COMMON CUMULUS CLOUD. DARK AND OPAQUE IT SHOWS ITS SILVER 



LINING ............ 764 



THE ATMOSPHERE AND HOW IT HAS BEEN EXPLORED .... 765 



A PILOT BALLOON READY TO BE RELEASED ...... 768 



STRATO-CUMULUS CLOUDS IN A SUNSET SKY ..... 769 



A DAPPLED SKY WITH A FLOTILLA OF FINE SMALL CUMULUS CLOUDS . 769 



THE STEVENSON SCREEN FOR RECORDING TEMPERATURE . . . 772 



ILLUSTRATION OF A RECORD OBTAINED BY THE PRESSURE-TUBE ANEMO- 



DURING A GALE ......... 772 



How WIND-VELOCITY is MEASURED. THE DINES PRESSURE-TUBE 



ANEMOGRAPH . . . . . . . . . ... 773 



THE RAINBOW (Coloured Illustration) . ...... 774 



THE ROBINSON ANEMOMETER ........ 778 



PHOTOGRAPH Copy OF A SUNSHINE RECORD ..... 778 



