45, CORNHILL, B.C., AND 122, REGENT STREET, W., LONDON. 83 



INSTRUMENTS USED FOR MEASURING THE RAINFALL 



FIG. 93. 



FIG 94. 



FIG. 95 



108. Howard's Rain Gauge,* (fig. 93). The simplest form of the in- 

 strument constructed 'and used by the celebrated meteorological writer, Luke 

 Howard, from whom it derives its name ; it has a 5-inch Copper Funnel, with 

 a turned brass Rim, fitted to a stoneware or glass bottle, with a glass graduated 

 measure divided to hundredths of an inch. Price, 10 6 



109. Symons' Rain Gauge, (fig. 94). This instrument has a glass 

 receiving bottle protected by a metal case, with openings at the side for the 

 convenience of observing the collected rainfall without disturbing the frame, 

 which is firmly supported in the ground by strong spikes. The measure holds 

 half an inch of rain for a 5-inch area subdivided into hundredths. 



Price, with graduated measure . . 10 6 



Ditto, in Copper 15 



See also Symons 1 Snorvdon Rain Gauge, No. 118, Page 85. 



110. Glaisher's Rain Gauge, (fig. 96). This gauge is eight inches 

 diameter, and arranged for the reception of the water only which falls upon 

 its receiving surface, and for the prevention of loss by evaporation. The rain 

 is first collected in a funnel, the receiving surface of which is accurately 



* Pluviometer, Ombrometer, Udometer. 



G 2 



