344 



Scientific Intelligence. [No. 8, new series. 



8. Calcutta, Botanical Garden, March 23rd and 24th. Decli- 

 nation, horizontal and vertical intensity, longitude and latitude. 



B. Plans of the Ganges in Hindoostan. 



9. Benares — April 3rd and 4th. Declination, horizontal and 

 vertical intensity, longitude and latitude. 



10. Lucknow, Oude — April 8th and 9th. Declination, hori- 

 zontal and vertical intensity, longitude and latitude. 



11. Agra — April 15th. Declination. 



12. Meerut — April 18th. Declination. 



The magnetic elements were therefore determined from between 

 latitude 22' to 27° 5' N. in the valley of the Brahmapootra, and to 

 29° in the plains of the Ganges, including a difference to longi- 

 tude of 16° 5 from 95° to 78° 5' East of Greenwich. 



One of the general results was, that the magnetic force, parti- 

 cularly the dip, has been found much greater the general formulae 

 made it expect. 



A. — In the valley of the Brahmapootra, delta of the Ganges, 



the dip was found — 



At Debrooghur, 38 29 175 



„ Tezpore, 37 14 58 



„ Oodulgoorie, 36 27 52 



„ Nurigoon (Bhootan,) 37 11 69 



„ Gowahatty 35 18 73 



„ Serajgunge 32 3 15 



„ Dacca... 31 0 80 



„ Koolna 29 18 49 



„ Calcutta 28 6 4 



i?.— In the plains of Hindoostan it was — 



At Benares 32 40 9 



„ Lucknow 35 18 20 



A similar result has been found by my brothers for the parts of 

 corresponding latitude in the North- West Provinces and in Cen- 

 tral India. 



