200 



LIEUT.-COLONEL SYKES ON THE ATMOSPHERIC TIDES 



Table III. 



Table of some of the Anomalies in the period of the ebb and flow of the atmospheric 

 tides in Dukhun, together with their Stationary Periods during 1830 at Poona. 



Date. 

 1830. 



Feb. 5. 

 6. 



8. 



9. 

 14. 



20. 



March 11. 

 19. 



April 11. 



17. 



May 10. 



June 9. 



10. 

 14. 



July 30. 



August 5. 



20. 



30. 

 Sept. 5. 



11. 

 October 4. 



12. 



13. 



14. 

 3. 



6. 

 15. 



Nov. 

 Dec. 



Maximum diurnal tide 9—10 a.m. 



Exact hour at which the tide turned, 

 together with the stationary period. 



Turned before lOi" am. 



/Turned at lO*" 15'"; station-"! 

 \ ary 35"'. J 



9'" 45"" to lO** 15"" ; quite stationary 

 9''30'"tolO''A.M.; quite stationary 



gh 45m tolO*" 20°' ; quite stationary 



9'' 30"" to lO*" A.M ; quite sta- 

 tionary; fall to ll*" A.M., 

 = •008. 

 9i'15'"; fall to9i'45'° = -010. 

 9'' SO"" to lO*- ; quite stationary 



9'' SO-" ; fall to 10" = -001. 



9" 45'" ; fall to 10" = -002. 



9" SO" to lO" 15 



stationary. 



lOh A.M. 



9I' SO™ to lO" ; stationary. 

 9'' ; fall to 10" = -017. 



9" SO*" to lO" IS"" ; stationary. 



10" 15>" A.M. 



r9" 30™ to 10''; stationary ;\ 

 I fall to 10" 30"' = -003. / 



9" 45™; fall to 10" 15"' = '004. 

 9" 30™ to 10" ; stationary. 

 9" 30™ to 10" 15™ ; stationary. 

 9" 30™ ; fall to 10" = -002. 

 9" 30™; fall to 10" 10™ = -002. 



9" 30™ ; fall to 10" = -003. 



9" 30™; fall to 10" --001. 

 10"; fall to 10" 15™ =-003. 

 9" 45™ to 10" 10™ ; stationary. 

 9" 45™ : fall to 10" 15™ = -004. 



Differ. 



of 

 attached 

 Therm. 



-I-0-5 

 +0-5 



-I-0-4 



+ 10 



+ 1-5 



+2-0 

 +0-5 



-I-2-5 



+0-5 



+ 1-0 



f2-0 



+ 1-0 

 +1-5 



+1-0 



00 



+0-5 



4-10 

 +0-5 

 +0-5 

 + 10 

 + 1-0 



+0-2 



+1-0 



+0-5 



00 



+M 



Minimum diurnal tide 4 — 5 p.m. 



Exact hour at which the tide turned, 

 together with the stationary period. 



Differ. 



of 



attached 



Therm. 



r Turned at 4" p.m. ; rise of -002 "1 

 \ only in 90™. J 



4" P.M.; rise of -008 in 75™. 



/ Turned at 4" 30™ ; rise of -005 1 

 1 in 15™. ; 



{Turn at 4" 15™; rise to 430 1 

 = "004 ; then quite stationary y 

 till 5" P.M. J 



{ Turn at 4" 45™ ; rise to 5*45 1 

 I =-005. J 



Turn at 4"; rise to 5-30 = -008. 



4" to 4" 30™ ; quite stationary. 

 4" ; rise to 4-40 = -024. 



4" ; rise to 4" 45™ = '001. 



4" 30™; rise to 5" p.m. = -002. 



4" 30™ ; rise to 4" 45™ = -005. 



4" P.M. ; rise to 4" 15™ = '004. 



'} 



4" 15™ ; rise to 4" 30™* = -008, 

 4" 30™ ; rise to 4" 45™ = -004. 

 J 4" 15™ to 4" 40™ ; stationary 

 \ rise to 5" = -002. 

 4" 15™ ; rise to 5" = -003. 



4" 30™ to 5" ; stationary. 



4" 45™ ; rise to 5" 30™ = -013. 

 4" 30™ to 4" 45™ ; rise of -001 only. 

 4" 15™ ; rise to 4" 30™ = -003. 

 4" ; rise to 4" 30™ = -001. 

 4" 15™; rise to 4" 30™ =-004. 



4" 30™ P.M. 



4" 30™ P.M.; rise to 5" = -003, 

 4" to 4" 15™ ; stationary. 



4" P.M. 



4" 15™ to 5" P.M.; stationary. 



+0-5 



+0-2 



0-0 



-0-5 



-0-3 



-0-5 



00 

 -20 



-1-2 



-0-2 



-0-5 



00 



0-0 

 00 



0-0 



00 



-0-5 



-0-5 

 00 

 -0-3 

 -0-5 

 -0-5 



00 



0-0 

 0-0 

 00 

 00 



Maximum nocturnal tide 10 — 11 p.m. 



Exact hour at which the tide turned, 

 together with the stationary period. 



Differ. 



of 



attached 



fherm. 



/ 10" to 10" 30™ ; quite station- 1 

 I ary ; fall of -002 in 15™. / 



r Turned at 10" 30™ ; fall to 10" "1 

 I 45™ = -008. / 



/Turned at 10" 45™; fall tol 

 \ 11" P.M. = -001. / 



/ Turn at 10" 15™ ; fall to 10" 1 

 \ 45™ = -004. / 



Turn at 11" p.m. 



10" 30™; fall to 10" 45™ = -006. 



'} 



10" 30™ ; fall to 10" 45™ = -003, 

 10" ; fall to 10" 30™ = -001. 

 / 10" to 10" 45™; stationary 

 1 fall to 11" =-006. 

 10" 30™ to 11" p.m. ; stationary. 

 / 10" 15™ to 10" 45™ ; stationary; ] 

 t fall to 11" 15™ =-005. / 



12" p.m., after heavy storm from 

 N E. at 7" 0™ and 8" 30™ ; tide 

 not suspended during storm, 

 10" 45™; fall to 11" =-010. 

 10" 30™ to 11"; stationary. 



10" ; fall to 10" 30™ = -001. 



10" 15™; fall to 11" = -003. 



11" P.M. ; fall to 11" 15™ = -001. 



10" 45™. 



11" 20™; fall to 11" 30™ = -001. 

 10" 45™; fall to 11" 15™ = -003. 

 11" to 11" 30™; stationary. 

 t9" P.M. ; fall to 11" P.M. = -012. 

 r9" 30™ to 10"; stationary; falll 

 1 to 10" 30™ = -002. / 



10" to 11"; stationary, 

 11" P.M. ; rise to 11" 30™ = -001. 

 11" P.M.; fall to 11" 45™ = -003. 

 11" 30™ : fall to 11" 45™ = -001. 



-10 

 00 

 00 



00 



00 



00 



0-0 

 00 



-0-3 



00 



0-0 



+0-3 



+0-5 

 00 



00 



+0-2 



00 



00 



00 



-01 



-0-5 



-0-5 



00 



-0-8 

 00 

 00 

 00 



I have no instance of a stationary period of 5** 30™, nor of two hours even, as observed by Dr. Balfouk in 

 Calcutta in 1795 ; and I strongly suspect that these lengthened periods would not have been on record had 

 Pr. Balfour's barometer read off to thousandths of an inch instead of hundredths. 



* Storm at 4 p.m. 



t Storms round the horizon at 4" 30™. 



