DISCUSSION AND ANALYSIS OF WINDS. 



701 



are rather E. S. E. at that season. (See Plates 5 and 14.) The mean direction of 

 the wmd is given below for the last-named places, as well as for others in Mexico, 

 the West Indies^ and Central America. 



Pacific Ocean — 



Lat. 25°-30° N., long. 105°-125° W. 



Lat, 20°-25° N., long. 105°-115° W. 



Lat. 15°-20° N., long. 110°-120° W. 



Lat. 15°-20° N., long. 90°-110° W. 

 Monterey, N. E. Mexico .... 

 Cordova, E. Mexico . . . . 



Vera Cruz, E. Mexico .... 

 N. Coast of Tehuantepeo 

 West Indies — 



Havana, Cuba ..... 



Turk's Island, S. Baliamas 



Jamaica, Porto Rico, San Dominpo and 

 Sombrero Island .... 



Barbadoes ...... 



City of Guatemala ..... 



Pacific Ocean, 5°-10° N., 75°-90° W. . 

 Costa Rica ...... 



Spring. 



N. 28° W. 



N. 56 W. 



N. 20 E. 



N. 46 W. 



S. 36 E. 



N. 36 E. 



N. 87 E. 



N. 29 E. 



N. 78 

 N. 71 



N. 73 E. 

 E. 



S. 85 



N. 69 W. 



S. 22 W. 



N. 61 E. 



N. 10° W. .77 



N. 67 W. .60 



N. 20 W. .39 

 N. 66^ E. .21 



S. 41 E. .82 



N. 53 E. .49 



N. 78 E. .21 



N. 54 E. .44 



N. 80 E. .70^ 



S. 64 E. .52 



N. 81 E. '.58 



N. 88 E. .87 



N. 32 E. .41 



S. 47 W. .58 



N. 74 E. .51 



N. 25° W. .67 



N. 37 W.:.53 



N. 33 E. 1.55 



N. 26 W.'.43 



S. 45 E. i 88 



N. 46 E. i.39J 



N. 5 E. .40" 



N 



38 



E. 



.26 ^ 



N. 



79 



E. 



.69 



S. 



85 



E. 



.55^ 



N. 



83 



E. 



.67 



S. 



86 



E. 



.85 



N 



44 



E. 



.62 



S. 



42 



W. 



.43 



N. 



58 



E. 



.38A 



Winter. 1 





C c 





■29 



N. 



24° 



W. 



.62 



N. 



23 



W. 



.48 



N. 



32 



E. 



.82 



N. 



16 



W. 



.34 



N. 



33 



E. 



.33 



N. 



45 



E. 



.28 



N. 

 N. 



22 

 53 



E. 

 E. 



.37i 

 .32J 



N. 



69 



E. 



.68 



N. 



78 



E. 



.63^ 



N. 



73 



E. 



.52 



N. 



76 



E. 



.89 



N. 



41 



E. 



.76 



N. 



28 



W. 



.30 



N. 



60 



E. 



.82 



(See also Plates 5, 6, and 7.) 



In the West Indies the direction of the wind is nearly due east, and the ratio 

 of resultant great, especially in Barbadoes. Here we have the real oceanic trade- 

 wind. About Havana the case is different. Cuba is sufficiently large to have 

 monsoons, but as we have observations on the northern coast only, the result of 

 the ascending currents of the summer in the interior of the island is to give addi- 

 tional force to the already prevailing E. N. E. winds. Observations on the south 

 and west coasts of Cuba and San Domingo would show another distribution of 

 winds. It is said by travellers that the Republic of San Domingo, in the eastern 

 part of that island, is subject to the full force of the trade-wind, and the climate 

 less hot, and healthier than could be expected, while Hayti, in the west, has not 

 as regular trades and a hotter climate. 



The eastern coast of Mexico has not as regular trades as the West Indies under 

 the same latitude. In winter especially, the barometric range is great, and ac- 

 cordingly the winds variable ; the sudden cold northers are especially noticeable in 

 winter. They appear when pressure is very low in Mexico and Central America, 

 and high in Texas and New Mexico. The appearance and course of the storm- 

 centres, on which depend the Mexican northers, have not been investigated as have 

 those of the United States. The northers extend far beyond the eastern coast of 

 Mexico. The coast of Honduras, as far as Oinoa, is subject to them, and they 

 pass even over the low Isthmus of Tehuantepec to the Pacific coast. (See Map, 

 Plate 6.) 



On the north coast of Tehuantepec the mean direction of the Avind is more 

 northerly than in the rest of Mexico and the West Indies. This is no doubt due 

 to the relative position of land and sea. In the city of Guatemala southwest winds 



