158 



THE ANDES OF SOUTHERN PERU 



chiefly of interest, scarcely needs to have such organization sup- 

 plied to him. Then, too, we hope that there will become available 

 in the next ten or fifteen years a vastly larger body of climato- 

 logical facts from this region. When these have been collected 

 we may look forward to a volume or a series of volumes on the 

 ' ' Climate of Peru, ' ' with full statistical tables and a complete dis- 

 cussion of them. That would seem to be the best time for the re- 

 production of the detailed statistics now on hand. It is only nec- 

 essary that there shall be sufficient analysis of the data from time 

 to time to give a general idea of their character and to indicate 

 in what way the scope of the observations might profitably be ex- 

 tended. I have, therefore, taken from the available facts only 

 such as seem to me of the most importance because of their un- 

 usual character or their special relations to the boundaries of 

 plant provinces or of the so-called "natural regions" of 

 geography. 



Machu Picchu * 

 The following observations are of special interest in that they 

 illustrate the weather during the southern winter and spring at 

 the famous ruins of Machu Picchu in the Canyon of Torontoy. 

 The elevation is 8,500 feet. The period they cover is too short to 

 give more than a hint of the climate or of the weather for the 

 year. It extends from August 20, 1912, to November 6, 1912 (79 

 days). 



ANALYTICAL TABLE OF WIND 



DIRECTIONS, MACHU PICCHU, 



1912 





Number of Observations 



Direction of wind 



Aug. 20 

 7 a. m. 



1 p. m. 



Sept. 30 

 7 p. m. 



Oct. 1 

 7 a. m. 



1 p. n 



Nov. 6 

 ). 7 p.m. 



N 



5 

 9 



4 

 6 



8 



2 



10 



1 



2 

 3 



7 



5 

 14 



2 

 1 

 1 

 1 

 3 

 6 

 2 



2 

 4 

 2 

 1 



12 

 4 

 5 



6 

 2 

 1 



4 

 1 

 3 





N. W 



11 



w 



4 



s. W 



6 



s 



2 



S. E 



3 



E 



4 



K E 



3 



CALM 



3 







1 Observer: E. C. Erdis of the 1912 and 1914-15 Expeditions. 



