PEALE.] 



UPPEE GEYSER BASIN CASTLE GROUP. 



203 



Ko. 15. Punch Boicl Geyser (Plate XVIII). This handsome spring is 

 900 feet southwest of the Pyramid. It is remarkable for its crested rim, 

 which rises 1^ feet above the general level. It is handsomely beaded 

 .^nd has a pointed border. A large area surrounding the spring is cov- 

 ered with siliceous deposit. Comstock found the spring active in 1873, 

 and Captain Ludlow says it played frequently during August 23, 1875. 

 (See p. 28, Report of reconnaissance from Carroll, Mont., to Yellowstone 

 National Park and return in 1875.) We have never seen it in action. 



CASTLE GROUP. 



The springs included in this group are spread over an area of about 

 22 acres, and are dividable into several clusters, one of which is on the 

 mound which has been built up about the crater of the geyser. Another 

 (28-30) probably corresponds to the "Hidden Springs" of the map of 

 1872, as no other springs could be found in this neighborhood. They 

 are 200 yards east of the Castle. North of them is another cluster (1-6) 

 which is about 300 yards from the Castle. The remaining springs (7-18) 

 are scattered along the edge of the river for a distance of over 300 yards 

 northwest from the mound of the Castle. The Castle Group contains 

 but one powerful geyser, viz, the one from which it is named. 



Between the group and the river, extending southward towards the 

 Three Crater Group and southeastward to within about 200 yards of 

 Old Faithful, is an extensive marsh in which there is a small pond. The 

 southeast side of this marsh is bounded by a terrace, which makes one 

 of the best cami)ing grounds in the Upper Basin. From it the principal 

 geysers, excei)t the Giant and Grotto, can be seen in action. 



TaMe of the Castle Group. 



Number and name. 



Size and depth. 



a 



o ci 



B ^ 



CO 



b: 



2 



So 



<D 



H 



Eemarka. 





a3 by 3J feet 



°F. 

 al83 

 6179 

 cl93 

 dl78 



138 



130 

 136 



151 

 145 

 172 





°F. 



a b, and c are continuously 

 boiling ani spurting; d is 

 quiet. 



Eed and green lined mossy 



basin. 

 Small red pool. 

 Gray spring, with 4 openings. 



Deep crater at one end. 

 Gray pools. 



Muddy pool near river. 

 Dead spring in grass near the 

 river. 





63 by 3 feet 3 inches 







2 



cSbyejfeet 



dl bv 8 feet. Total length 



is 24 feet. 

 53 feet long by 20 and 27 feet 



wide. 



3 







4 



10 by 5 feet 4 inches, 2 feet 



deep. 

 17i by 9 feet and 13A feet- . . . 

 4A by 4J feet . ...". 







5 

















7 



7 by 11 feet, 3 feet deep 



8 







9 



3 J by 5 feet, 2 feet deep 



Mound 18 inches 2 feet high, 

 opening i.s 8 by 10 feet. 



139 

 193 







10 







18 in<;hes in diameter on 

 mound. 

 Spouter. 



Near 10 boils gently. 

 Muddy pool. 



Water 8 inches below the top 

 of the spring, which is red. 



10a 







11 



3 by 4 fe«t, 3 feet inches 



deep. 

 1 foot by 18 inches 



145 



193 



170 



• 197 



135 

 137 







12 







13 



3 feet by 8 inches, orl foot. . 

 1 by 2 feet 







14 







water. 

 Two sputtering holes, each 2 

 or 3 inches in basin. 



Hidden in gi'ass. 



15 



Holes 1 to 3 feet lonrr 



\ 







5 





