Report of the Kew Committee. 



85 



The Indian Government will defray all expenses that may be in- 

 curred in the prosecution of the experiments. 



V. Verification of Instruments. 



The following magnetic instruments have been verified, and their 

 constants have been determined : — 



A set of Self-recording Magnetographs for the Nice Observa- 

 tory. 



A Unifilar Magnetometer for Casella. 



Three Dip Circles for Casella. 



A pair of Dipping Needles for Elliott Brothers. 



There have also been purchased on commission and verified : — 



A Unifilar Magnetometer and Dip Circle for Professor Tacchini, 

 Rome. 



A Unifilar Magnetometer and Dip Circle for Professor Perard, 

 Liege. 



A Dip Circle for Capt. Hoffmeyer, Copenhagen. 

 A Dip Circle for Professor Malmberg, Stockholm. 

 A Pair of Dipping Needles for the Colaba Observatory. 

 A Dip Needle for Senhor Capello, Lisbon. 



The number of meteorological instruments verified continues still to 

 increase, having been in the past year as follows : — 



Barometers, Standard 59 



,, Marine and Station 109 



Aneroids 34 



Total 202 



Thermometers, ordinary Meteorological 1704 



,, Standard 60 



Mountain 40 



Clinical 4217 



,, Solar radiation . . . / 64 



Total 6085 



Besides these, 36 Deep-sea Thermometers have been tested, 17 of 

 which were subjected in the hydraulic press, without injury, to 

 pressures exceeding three and a half tons on the square inch, and 18 

 Thermometers have been compared at the freezing-point of mercury, 

 making a total of 6139 for the year. 



Duplicate copies of corrections have been supplied in 20 cases. 



