RANGE BIBLIOGRAPHY 131 



Morris, M. S., and Durrell, L. W. (2389) 



a recording atmometer. Ecology 13: 100-101, illus. 1932. 



Murray, S. M., and Glover, P. (2390) 



some practical points regarding the detailed botanical analysis of 

 grassveld or other pastures by the list quadrat method. jour. 

 Ecology 23: 536-539. 1935. 



Nelson, E. W. (2391) 



mapping of browse areas. Jour. Forestry 28: 91-92. 1930. 



(2392) 



METHODS OF STUDYING SHRUBBY PLANTS IN RELATION TO GRAZING. Ecology 



11: 764-769, illus. 1930. 

 Nichols, G. E. (2393) 



METHODS IN THE FLORISTIC STUDY OF VEGETATION. Ecology 11: 127-135. 



1930. 

 Oliver, F. W., and Tansley, A. G. (2394) 



METHODS OF SURVEYING VEGETATION ON A LARGE SCALE. New Pliytol 3: 228- 



237, illus. 1904. 

 Olmstead, L. B., Alexander, L. T., and Middleton, H. E. (2395) 



A PIPETTE METHOD OF MECHANICAL ANALYSIS OF SOILS BASED ON IMPROVED 



dispersion procedure. U. S. Dept. Agr. Tech. Bull. 170, 23 pp., illus. 

 1930. 



Pearsall, W. H. (2396) 



THE STATISTICAL ANALYSIS OF VEGETATION: A CRITICISM OF THE CONCEPTS 



and methods of the upsala school. Jour. Ecology 12: 135-139, illus. 

 1924. 



Pearse, K. (2397) 



an area-list method of measuring range plant populations. Ecology 

 16: 573-579, illus. 1935. 



— Pechanec, J. F., and Pickford, G. D. (2398) 



an improved pantograph for mapping vegetation. Ecology 16: 529-530, 

 illus. 1935. 



Pechanec, J. F. (2399) 



comments on the stem-count method of determining the percentage 

 utilization of ranges. Ecology 17: 329-331. 1936. 



Pickford, G. D., and Stewart, G. (2400) 



COORDINATE METHOD OF MAPPING LOW SHRUBS. Ecology 16." 257-261, illus. 



1935. 



PlNCHOT, G. (2401) 



INSTRUCTIONS FOR RECORDING OBSERVATIONS ON LEAFING, FLOWERING, AND 



fruiting of forest trees. U. S. Forest Serv. [Unnumbered Circ], 3 

 pp. 1909. 



Pound, R., and Clements, F. E. (2402) 



A METHOD OF DETERMINING THE ABUNDANCE OF SECONDARY SPECIES. Minn. 



Bot. Studies 2: 19-24. 1898. 

 Priestley, J. H. (2403) 



THE QUADRAT AS A METHOD FOR THE FIELD EXCURSION. Jour. Ecology 1: 89- 



94, illus. 1913. 

 Puri, A. N. (2404) 



A NEW TYPE OF HYDROMETER FOR THE MECHANICAL ANALYSIS OF SOILS. 



Soil Sci. 33: 241-248, illus. 1932. 

 Taylor, E. M., and Asghar, A. G. (2405) 



A NEW APPARATUS FOR MEASURING SOIL SHRINKAGE. Soil Sci. 37: 59-63, 



illus. 1934. 

 Ramaley, F. (2406) 



QUADRAT STUDIES IN MOUNTAIN GRASSLAND. Bot. GaZ. 62: 70~74. 1916. 



Ranker, E. R. (2407) 



DETERMINATION OF TOTAL NITROGEN IN PLANTS AND PLANT SOLUTIONS: A 



comparison of methods with modifications. Mo. Bot. Gard. Ann. 12: 

 367-380, illus. 1925. 



