CONCLUSIONS. 



As iii the previous report on this subject, the data obtained in the 



studies described in the previous pages are for convenience platted 

 graphically in three charts, ligx. 1. _>. and 3. 



Chart No. 1 shows the percentage of sugar in the l>eet. the latitude 

 of the station, and the sunshine record, including tin- total per- 

 centage and it- di-t rihution. The plat is based upon the pnvrniage 

 of sugar in the beets, beginning with the station having the low.--! 

 record ami ending with that having the highest. Since North ( 'aro- 

 lina has dropped out of the list of stations cooperating. Washingt'-n 

 en jo\'s tht* distinction of having produced beets with the lowot content 

 of sugar. In order of sugar content, the other stations are arranged 

 in an ascending scale, as follows: Lexington, Madison, Blackshurg. 

 Ames. Agricultural College, Lafayette, Ithaca, and Geneva. 



In general it may be seen that the latitude, as in the first year's 

 experiments, follows the sugar content. A notable exception to this 

 is found in the case of Blaeksburg. The reason of this exception has 

 been stated, namely, the great altitude of the Blacksburg station. 

 This fact, for the illustration of which the Blacksburg station was 

 especially selected, indicates that, in platting the latitude curve, some 

 method of reducing it to sea level should be introduced. Just what 

 method is best suited for this purpose can not be stated or even sug- 

 gested. It is evident, however, that this is a problem which must 

 receive due consideration, and that this calculation must he a special 

 one for each case. For instance, the effect of altitude on temperature 

 on a mountain plateau like that of Blacksburg would be very different 

 from the effect of the same altitude upon the temperature on a vast 

 plain like that extending around Ames. Iowa, or even Lexington, 

 Ky. These problems are of the utmost meteorological and scientific 

 import, and the depression in the curve of latitude, as illustrated in 

 this chart by the Blacksburg station, is of the greatest interest. Klim- 

 inating this one point, it will be seen that the content of Migar varies 

 practically with the latitude, the only other exception to this being 

 the data from the Lafa\ T ette station, which from the tir>t of the collab- 

 orative studies have been found to be very erratic. 



The curve showing the percentage of sunshine is broken, because no 

 data for the Madison station is procurable. Kentucky . a- will be -.-en. 

 had the maximum percentage of sunshine platted, namely. 7:, per cent. 

 The lowest percentage of sunshine was that of the Blacksburg station, 

 namely, 53.7 per cent. The next highest was that of the station- at 

 Ames and Lafayette, the}' having the same percentage, namely. 69.9 

 per cent. The percentage of sunshine seems to have but little effect 

 upon the sugar content, and it appears to be well established that the 

 chemical activities of the sun's light, in promoting the condensation 



