COTTON CULTURE DIRECTION OF WINDS. 69 



was thus enabled to make as complete a table of the exports of cotton 

 from the whole empire as it is possible to obtain. I have arranged these 

 tables so as to show the exports both by years and by provinces, and have 

 reduced the weights, which were originally given in arrobas and kilo- 

 grams, to pounds. Anything like a complete report of exports can only 

 be had as far back as 1851-52. From other sources I found that cot- 

 ton had been exported from Brazil as early as 17G0, when 20,833 pounds 

 were shipped from Maranhao. From LS51-52 to ls75-"7u' the total ex- 

 ports from all the provinces reached 1,532,272,075 pounds. 



I gathered some trustworthy information in regard to the ravages of 

 the cotton insects in the province of Sao Paulo, which is the most 

 southerly province in which cotton has been grown successfully, and 

 with it an idea of the percentage of loss caused by these insects in that 

 part of the country. 



From the works of M. Mouchez, formerly a lieutenant in the Brazilian 

 navy, and a good authority on the subject, I have obtained a series of 

 charts showing the direction of winds along the northern coast of Brazil 

 for each month in the year. From Maury's data, as furnished me by 

 the United States Hydrographic Office, I have also constructed charts 

 for each month of the year, showing the same thing. 



In addition to the reports on winds, already mentioned as having 

 been obtained at Palmares, in the province of Pernambuco, I received 

 from Dr. Draennert, the director of the Imperial Agricultural School 

 at Bahia. a report on the direction of winds at that place, the observa- 

 tions having been made by him, and covering a period of six years. 

 This report includes information in regard to the force of the winds. 



Having obtained all the historical and statistical information to be 

 had in Rio de Janeiro upon the subjects which I was directed by you to 

 investigate, and having sent out the circular questions asking for fur- 

 ther information on these subjects, I embarked at Bio de Janeiro for 

 New York on the 18th of April, and reached Washington on the L6th 

 of May of the present year. 



I have already received a number of valuable replies to the circular 

 and shall doubtless receive others before the report upon my work will 

 have been finished. 



T have the honor to be, sir, your obedient servant, 



JOHN C. BBAKNEB, 



Special Agent, 



Prof. C. V. Bilev, 



U. S. Entomologist. 



