228 



Cincinnati Society of Natural History. 



Exp. 25 — March 30, 1899, 3.30 p. m. Socorro, N. M., 75.5 

 miles south of Albuquerque. Three agar plates were ex- 

 posed by Mr. J. B. Terry, in the usual way, about one-half 

 mile west of town. A' heavy rain four days previous. Wind 

 very slight. 



April 5: 



PI. 30 min. — 168 bacteria and 12 molds. 

 PI. 45 min. — 264 bacteria and 14 molds. 

 PI. 60 min. — 228 bacteria and 14 molds. 

 Average per 10 min., 51 bacteria. 

 Species present: Ai, A 2 , A 3 , A 4 , A 5 , and A 9 . 

 This is substantially the same flora as at Albuquerque, but 

 the red colonies were numerous, especially A 5 , which at the 

 former place was relatively infrequent. The white colonies 

 predominated. 



Exp. 26 — April 30, 1899. Belen, N. M. Three agar plates 

 were exposed for 30 minutes by Rev. Bendrat. The exposure 

 was made on the roof of a store-building, height, 15 ft. Very 

 slight breeze. 



May 8: 



PI. 1 — 317 bacteria and 14 molds. 



PI. 2 — 344 bacteria and 6 molds. 



PI. 3 — 890 bacteria and 9 molds. 



Average per 10 min., 172.3 bacteria. 

 Species : A Lj A 2 , A 3 , A 4 , and A 5 . The flora for this 

 exposure is identical with that for Albuquerque, but the red 

 colonies, Ai, and A 5 are very rare, while A 3 and A 4 , pre- 

 dominate. 



Exp. 27 — May 2, 1899. Clemens' ranch, in San Mateo 

 mountains, 15 miles from Magdalena and 105 miles south of 

 Albuquerque. Altitude nearly 6,500 ft. Two plates were 

 exposed by Prof. F. S. Maltby under the following con- 

 ditions : 



PI. 1 — May 1, 2.25 p. m. Exposed for 30 minutes on water- 

 ing trough. Considerable wind carrying dust from horse 

 corrals over plate. 



PI. 2 — May 2, 6.20 A. m. Exposed fur 35 minutes in front 

 of cabin. No wind and no dust. 



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