ON COMPARING AND EEDUCINa MAGNETIC OBSERVATIONS. 



95 



November 1875. Hourly Determinations of 29-day Means of each Hour. 

 Magnetograp h . 



Bombay 

 Civil 

 Hoiir 



Date 



21 



22 



23 



24 



25 



26 



27 



28 



29 



no 



22 



■542 

 •538 

 •533 

 •530 

 •528 

 •526 

 •523 

 •522 

 •520 

 •517 



•546 

 •541 

 •536 

 •533 

 •531 

 •529 

 •526 

 •525 

 •522 

 •519 



•544 

 •541 

 •536 

 •533 

 •531 

 ■528 

 •525 

 •523 

 •521 

 •517 



•547 

 •543 

 •539 

 •535 

 •532 

 •530 

 •526 

 ■524 

 ■521 

 ■518 



■548 

 ■544 

 •540 

 •537 

 ■534 

 ■531 

 ■527 

 •525 

 ■522 

 •519 



•552 

 •548 

 •544 

 •540 

 •538 

 •536 

 •531 

 530 

 •528 

 •525 



559 

 555 

 552 

 547 

 545 

 543 

 540 

 539 

 537 

 534 



•575 

 •572 

 ■569 

 •564 

 •561 

 •558 

 •555 

 •554 

 •551 

 •549 



•594 

 •590 

 •588 

 •584 

 •581 

 •577 

 •574 

 •572 

 •569 

 •566 



•610 

 •606 

 •604 

 •600 

 •590 

 •592 

 •588 

 •584 

 •582 

 •578 



Hourly Abstract of Differences from 29-day Means of Horizontal Force 

 A -B + -100 J«c/I. 



