222 



EEPOET UNITED STATES GEOLOGICAL SURVEY. 



1871. — As we entered the Upper Geyser Basin in 1871 late on the 4th 

 of August and left early in the morning of the 6th, we had but little 

 opportunity for observations, as a great part of the time was spent in 

 other portions of the Basin. Captain Barlow, who was there at the 

 same time, records a measurement of Old Faithful's column as 138 feet.* 

 We estimated the height as from 125 to 150 feet. No accurate time 

 observations were made. 



1872. — I spent three days in the Upper Geyser Basin in 1872. and most 

 of one of these days I spent in the neighborhood of Old Faithful, in order 

 to record the eruptions which are given below in tabular form, which is 

 the same as that given in the report o^ 1872,t save that an additional 

 column is given and the others are rearranged, while corrections are 

 added. I found it impossible to obtain the temperature of the water, 

 as I had no self-registering thermometers, and the escape of steam was 

 so great that I could not use an ordinary instrument. I attempted to 

 obtain the depth of the geyser, but the rope became tangled and I found 

 it impossible, largely on account of the irregularities in the geyser tube. 

 The heights given in the following table were from the end of a base 

 line 100 feet long: 



Table of observations of 1872. 



§ 



i 



1 



1 



Date. 



a 



a 



o 



ft 



u 



0) 



§ 

 1 

 ft 



2 



s 



1 



a 

 <^ 



o 



a 



i 



"S 



'3 



o 



t 



o 



a 



H 



ft 

 !3 

 t-i 

 <S 



■s 

 § 



a 



bo 



B 



'3 



a 



li 

 g.| 



li 



r 



.1 



SI 



1 



i 

 1 



1 



1872. 

 Aug. 17 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 18 

 Aug. 19 

 Aug. 19 

 Ann-. 20 



h. m. 8. 



3 22 00 p. m. 



7 27.30 a. m. 



8 35 30 a. m. 



9 40 30 a. m. 



10 4G 2G a. m. 



11 54 31 a. m. 



1 05 05 p. m. 



2 15 25 p. m. 



3 23 51 p. m. 



4 33 22 p. m. 



5 41 00 p. m. 



6 42 30 p. m. 



7 44 30 p. m. 



8 51 00 p. m. 



10 07 00 a. m. 



11 12 30 a. m. 

 11 54 00 a. m. 



h. m. s. 

 3 27 00 p. m. 



7 32 30 a. m. 



8 40 30 a. m. 



9 46 30 a. m. 



10 51 13 a.m. 



11 59 10 a. m. 



1 09 46 p. m. 



2 20 15 p. m. 



3 28 22 p. m. 



4 38 22 p. m. 



5 46 00 p. m. 



h. m. 8. 



h. m. s. 



h.m. s. 



TO. S. 



5 00 



s. 



Feet. 



Feet. 



2 









5 00 



5 00 



6 00 









3 





i 08 66 i 03 6o 



1 05 OOi 1 00 00 

 1 05 56 59 56 

 1 08 05 1 03 18 

 1 10 34 1 05 55 

 1 10 20! 1 05 39 

 1 08 2H1 1 03 36 

 1 09 3l! 1 05 00 









4 











5 

 6 



7 



8 



9 



10 



10 46 27 a. m. 



11 55 00 a. m. 



1 05 20 p m. 



2 15 46 p. m. 



3 24 10 p. m. 



4 47 

 4 39 

 4 41 

 4 50 

 4 31 

 .5 00 



1 



29 

 15 

 21 

 19 



49.4 

 45.0 

 52.2 

 49.9 

 31.9 



106. 3 

 130.3 

 125. 5 

 125.5 

 120.8 



11 





1 07 38 1 05 .^^Si 5 00 









12 

















13 

















14 

















15 



10 11 45 a. m. 



11 17 20 a. m. 



11 .58 20 n. Tn. 









4 45 









16 





1 05 30 



1 00 45 



4 50 

 4 20 



"453 









17 



:::::: :::::.:i 









Average inters 







1 07 54 



1 02 58 



17 





























1873. — Professor Comstock's description of the eruption in 1873 is 

 like that of preceding years. The preliminary squirts began about 8 

 minutes before the eruption in the one he describes,^ and the column 

 reached a height of nearly 150 feet. He says also : 



In every case the force of tlie ejection was mucTi the same, bnt the duration of the 

 premouitory and subsequent sputterings was quite variable. In the third eruption, 



*Eecounaissance of Yellowstone Eiver, Senate Ex. Doc. No. 66, 42d Congress, 2d 

 sess., p. 30. 



t Report U. S. Geol. Survey for 1872. 



t Reconnaissance of Northwestern Wyoming, &c., by Capt. W. A. Jones, in 1873, 

 p. 250. 



