Lake Maxinkuckee, Physical and Biological Survey 159 



that for the air being 44.6°. In 1900, the variation was from 

 32.9° to 59.8° at 6 a.m., from 39.6° to 63.8° at noon, and from 

 39.3° to 60.5° at 6 p. m. The lowest daily average was 38.7° on 

 the 30th, the highest was 62.6° on the 3d, and the average for 

 the month was 47.6°, that of the air being 40.7°. In 1904, the 

 variation was from 37.5° to 51.5° at 6 a. m., from 38.5° to 53.9° 

 at noon, and from 38° to 53° at 6 p. m. The lowest daily average 

 was 38.5° on the 27th, the highest was 53° on the 4th, and the 

 average for the month was 45.4°, that of the air being 40.4°. 



In 1906, the variation was from 35.5° to 53.5° at 6 a.m., from 

 37° to 53.2° at noon, and from 37.2° to 50° at 6 p. m. The lowest 

 daily average was 36.2° on the 20th, the highest was 48.8° on 

 the 1st, and the average for the month was 44.6°, that of the air 

 being 39.2°. 



For December, there are 3 records for 1898 (32° at 6 a. m. on 

 the 7th, 9th and 14th) and nearly complete records for 1899, 1900 

 and 1904. In 1899, the variation was from 32° to 46° at 6 a.m., 

 from 32° to 48° at noon, and from 32° to 47° at 6 p. m. The lowest 

 daily average was 32° on the 16th, 29th, 30th, and 31st, the high- 

 est was 47° on the 11th, and the average for the month was 37.2°, 

 that of the air being 28.2°. In 1900, the variation was from 32° 

 to 40.9° at 6 a.m., from 32° to 42° at noon, and from 32° to 42.6° 

 at 6 p.m. The lowest daily average was 32° on the 14th, the 

 highest was 41.5° on the 1st, and the average for the month was 

 36.8°, that of the air being 31.7°. In 1904, the variation was 

 from 32° to 37° at 6 a. m., from 32° to 37.8° at noon, and from 32° 

 to 36.5° at 6 p. m. The lowest daily average was 32° on the 10th, 

 12th, 13th, 15th, and 16th, the highest was 36.1° on the 2d, and 

 the average for the month was 33.8°, that of the air being 25.2°. 



In the following tables are given the detailed records of the 

 water temperature observations : 



11—17618 



