62 ANIMAL ECOLOGY 



making camps, cookery, pests in the woods, blazes 

 and survey lines, rations, emergency foods, getting 

 lost, accidents, etc. 



KNATJTHE, K. 



1907. Das Siisswasser, chemische, biologische, und bakter- 

 iologische Untersuchungsmethoden unter besonderer 

 Berucksichtigung der Biologie und der fischerei- 

 wirtschaftlichen Praxis, pp. 663. Neudamm. 

 A very important work on the technique of fresh water 

 biology. 



LEE, A. B. 



1900. The Microscopist's Vade Mecum. A Handbook on 

 the Methods of Microscopic Anatomy. Fifth Edi- 

 tion, pp. 532. Phila. 



Very useful for methods of preserving delicate animals, 

 and those in which the detailed structure of the ani- 

 mal must be studied. 



LIVINGSTON, B. E. 



1906. The Relation of Desert Plants to Soil Moisture and to 



Evaporation. Carnegie Inst. Pub. No. 50. pp. 78. 

 Methods of determination of moisture content of the 

 soil and the air. 



McAxEE, W. L. 



1907. Census of Four Square Feet. Science, N. S., Vol. 



XXVI, pp. 447-449. 



A quantitative study of the species of invertebrates 



and seeds found on the forest floor and on a meadow. 



1912. Methods of Estimating the Contents of Bird Stomachs. 



The Auk, Vol. XXIX, pp. 449-464. 



1912. The Experimental Method of Testing the Efficiency 

 of Warning and Cryptic Coloration in Protecting 

 Animals from their Enemies. Proc. Acad. Nat. 

 Sci. Phila., 1912, pp. 281-364. 



An important critical study of the value of feeding experi- 

 ments, conducted in captivity, as a method of deter- 



