SERIES B. ZONE 15. LAT. 15° TO 20° N. 



533 



(Nos. 29 to 32.) Africa and South-western Arabia. 



Observed at the following places, viz. : — 



Timhuotoo, in Soudan, where Rene Caillie experienced a prevalence of easterly winds during the 

 month of May, 1822. 



Doiigola, Ebou Egli, Qoubouchi, Assour, Ras el Gartoum, and the intervening regions in Nubia, 

 between the parallels of latitude 15° and 20° north, by Frederick Cailliaud, from January 11 to 

 June 4, 1821, and from May 1 to 17, 1822. 



Massowah and vicinity in Northern Abyssinia, by Rev. H. Hunter, for 42 days in the year 1778, 

 and at the residence of M. W. Munzinger, in Massowah, from February to September inclusive in 

 the year 1864. 



Oasis Kauar, date not preserved, by Gerhard Rohlfs. 



Red Sea, by Rev. H. Hunter, between the parallels of latitude 15° and 20°, for 24 days in the 

 year 1778. 



Place of 

 observation. 



Time of 

 the year. 



Relative Prevalkwoe of Winds from the Different Points 

 OF THE Compass. 



Direction of 



resultant. 



2"^ 



Monsoon 

 inllucncca. 



1 



s 



.£5 

 1 







f4 





w 

 tfl 

 H 





05 











1 





^ 

 •i 





E 

 O 



Direction. 



£ 



.. ,^^- !-^r.v I 



23 

 5 



128 

 1 

 75 



46 

 3 

 2 



27 



2 

 

 



10 

 5 



3 

 

 



12 



10 



9 



12 



2 

 

 



65 

 13 



5 

 

 



7 







6 



10 



... 





 

 



11 



12 



1 





 



12 

 10 



10 

 2 





 

 



30 

 10 



3 

 3 

 



3 

 

 



1 





 

 



3 

 3 



4 

 

 



11 

 2 

 

 6 





 

 



1 



6 

 3 



12 

 

 



29 

 9 

 3 



29 





 

 



89 

 47 



56 



3 



23 



1 

 





 4 



Easterly. 



S. 76°17'W. 

 S. 62 4 E. 



N. 17 W. 

 S. 26 34 W. 

 North. 



N. 7 29 W. 

 N. 16 32 E. 

 N. 78 51 E. 

 N. 7 54 W. 

 N. 21 28 E. 



.20 

 .21 



.63 



.28 

 1.00 



.45 



.15 



.59 



.53^ 



.33 





.23 

 .18 

 .50 

 .130 



31 



109 

 4 

 49 



123 

 30 

 30 

 53 



Timbuutoo. ( 

 29(o). • 

 Oasis 

 Kauar. 



30. i 

 Nubia, 



April ) 

 May / 

 June 



SnriiKT 



2 

 2 



1 

 1 

 



3 

 4 

 

 2 



... 



1 



(1 

 









15° to 1 

 20° N. J 

 31 and 32. " 

 Northei-n 

 Abyssinia • 

 and the 

 Red Sea. . 



Winter 



Spring 

 Summer 

 September 

 Winter 

 The year' 





N. 52^°W. 

 S. 26 W. 

 S. 67 E. 

 N. 42 W. 



' Computed from the resultants for the seasons. 1 



(Nos. 33 and 34.) Arabian Sea, longitude 50° to 74° East. 



Computed from observations for an aggregate period of H years, collected and classified from the 

 logs of numerous sailing vessels, at the United States Naval Observatory, under the direction of 

 Capt. M. F. Maury, Superintendent. 







^^" 



Kelative Prevalence of Winds from the Different 













Place of 



Time of 







Points ob the Uompass. 













Direction of 





-3 

































i 



observation. 



the year. 



A 

 §. 





f4 





1 







ai 



j5 



3 

 01 









^ 

 R 





a 

 6 





resultant. 





.a 

 'S 

 3 



33. r 



Longitude I 

 50° to 1 

 70° E 



Spring 



2 



15 



10 



5 



1 1 

 13 6 



12 



11 



71 61 20 



22 



7 







18 



17 







S. 



79°13'W. 



.09 



57 



Summer 































3 



8: 50 



11 



16 



4 



6 











s. 



58 38 W. 



.87 



33 



Autumn 



24 



22 



72 



34 



87 



8 



22 



16 



6 



8 



31 



12 



11 



9 



9 



5 



23 



N. 



70 57 E. 



.38 



133 



Winter 



12 



14 



15 



15 



48 







3 















6 











1 



8 



12 







N. 



48 19 E. 



.78 



43 



The year' 





































N. 



7 8 W. 



.02 



266 



34. r 



Longitude 

 70° to 

 74° E. 



Spring 



7 



6 



10 



2 



(i 











3 



2 



9 



12 



39 



24 



22 



42 



35 



i 



N. 



66 10 W. 



.63 



71 



Summer 







7 







n 











3 



2 



2 







38 



96 



29 



19 



13 



13 







S. 



78 32 W. 



.78 



74 



Autumn 



22 



18 



11 



6 



0: 7: 



5 



6 



2 







9 



27 



19 



22 



21 



2 



1 



N. 



52 43 W. 



.40 



59 



Winter 



41 



19 



12 



8 



4 



2 











1 



1 







4 



7 



10 



29 



7 



N. 



39 W. 



.71 



48 



The year' 



































N. 



57 44 W. 



.49 



252 









■ 



Computed from 



the resultants for tl 



e S( 



aso 



IS. 









