wilson] GEOGRAPHY FALL OF STREAMS. 



Fall of Lake Fork, commencing at divide ivest of Handle's Peak. 



447 



To valley • 



Thence to junction of south branch 



Thence to mouth of Godwin Creek 



Thence to point where road strikes- creek 



Distance. Fall 



Miles. 



5i 

 15 

 21 



Feet. 



2,200 



1,200 



1,200 



800 



Fall per 

 mile. 



Feet. 



880 



218 



80 



38. 



Fall of Godwin Creek, commencing at divide betiveen it and Uncompahgre. 





Distance. 



Fall. 



Fall per 

 mile. 





Miles. 



n 



10" 



Feet. 

 2, 800 

 1,000 



Feet. 



374 





100 







COMPARISONS OF ANEROIDS WITH THE MERCURIAL BAROMETER. 



The following table gives the comparisons of the aneroids with the 

 mercurial barometer at different altitudes, ranging from 5,000 to over 

 14,000 feet above sea-level. These comparisons were made very care- 

 fully, and as often as practicable, hoping thereby to have a good check 

 on any heights which were dependent on the aneroids; and at the same 

 time wishing to see if there was any regularity in the movements of the 

 aneroids. But there does not appear to be any regularity in the changes 

 which they undergo. Generally, in going up or down any considerable 

 height in a short time, the aneroids would not change fast enough; 

 therefore would make the difference between points too small, while at 

 the same time they always indicated too great an absolute height, always 

 reading less than the barometer. 



In the tables given below, the readings of the barometer are reduced 

 to 32° Fahrenheit. The aneroids are supposed to be compensated for 

 temperature. 



The corrections to be applied to the aneroids are placed in separate 

 columns, with the sign prefixed, which in this case is always plus, as the 

 aneroids constantly read lower than the barometer. 



The instruments used were Green's cistern barometer, and the small 

 watch-aneroids by the same maker. 









?o 



•s 



rs 



-o 



i> 



o 



<& 















o 







a 















it 















1° 



n 



a 



a 



o£J 



= 2 



=>2 











































Location. 



Time. 



Date. 



■c °-° 

 ai -* o 



o~ 



m o 



o 

 a> O 



a> o 





2* 



gs§- 



"■Sis 









a ^ 



»3 



c3 



"2 



C3 



go 



2 2 



go 











<U 

















W 



21.13 



w 



M 



O 



u 



o 



Camp 12 



3p.m 



Julv 29, 1874 



21. 854 



21.10 





+ .724 



+ .754 



-f .000 







Julv 30, 1874 



21.717 





20. 86 



20.10 





.857 



1.617 



Station 2 



2 p. ni 



July 30, 1874 



18. 633 



18.10 



17.80 



17.00 



.533 



.833 



1.633 



Station 3 



1 p. m 



12. 45 p. m . 



6 p. m 



2 p. m 



10 a. ni 



2 p. m 



July 31, 1874 

 Aug. 1,1874 

 Aug. 1, 1874 

 Aug. 3.1874 

 Aug. 4, 1874 

 Aug. 6, 1874 

 Aug. 7,1874 

 Aug. 7,1874 



19. 177 

 19.023 



20. 608 

 21. 275 



21. 752 

 18. 924 

 22. 134 



18.60 

 18.40 

 19.82 

 20. 48 

 21.00 

 18.34 

 21.27 







.577 

 .623 



.788 

 .795 

 .752 

 .584 

 .864 











































Station 8 











Camp 20 







Camp 22 



11.50 a. m. 



21. 610 



20.71 





20. i5 



.900 





1.460 



