Part 3

Cirro-stratus cloud 56

Cirrus cloud 52

Clouds, forms of 52

„ amount of 57

Compass bearings 71

Conversion of thermometer scales 23

Cumulo-stratus cloud 56

Cumulus cloud 53

Dew-point 48

Electrification 86

Electrometers, forms of 90

Electroscope 89

Evaporation, measurement of 24

Fahrenheit’s thermometer 20

Fortin’s barometer 27

Freezing-point 20

Frost, management of hygrometer in 50

Gold-leaf electroscope 89

Glass, storm 41

Heights, measurement of 37

Hours of observation 39

Howard’s cloud nomenclature 52

Hygrometer, Daniell’s 47

Hygrometer, Mason’s 48

Hygrometer precautions 50

Kew verification 42

Lightning 90

„ conductors 91