124 Journal of the Mitchell Society [^April 



VOL. PAGE 

 A key to the species of frogs and toads liable to occur 



in North Carolina 23 157 



Notes on the life-zones in North Carolina (with F. 



Sherman) 24 14 



On the number of species of birds that can be ob- 

 served in one day at Raleigh, N. C 25 54 



Some notes on the song periods of birds 25 59 



Remarks on the relation of birds to our farms and 



gardens 26 62 



Catching hawk moths on flowers at dusk 27 97 



Capture of Raleigh by the wharf rat 28 92 



Zoo-geogra^phy, a study of life zones 29 10 



BROWN, Wade Hampton, 



Malarial pigment (hematin) as a factor in the pro- 

 duction of the malarial paroxysm 28 97 



BRYANT, Victor Silas, 



List of fishes in the museum of the University of 



North Carolina, with description of a new species. . 5 16 



CAIN, William, 



Demonstration of the method of least work 8 5 



The transition curve 8 105 



On the fundamental principles of the dififerential 



calculus 9 S 



The stone arch 10 32 



Notes on the exact computation of the queen post 



truss 13 43 



A method of laying out grades for sewers by aid 



of the transit 17 II 26 



Notes on the algebraic form, "/» IQ 3 



Note on imaginary roots of a cubic 19 39 



Note on the fundamental bases of dynamics 28 68 



Review 29 



CALLISON, James Scott, 



The distribution of boracic acid among plants. 7 14 



On the occurrence of boracic acid as an impurity in 

 caustic alkalies (with F. P. Venable) 7 21 



CLARKE, Thomas, 



Some of the properties of calcium carbide (with 



F. P. Venable) 12 1 10 



A study of the zirconates (with F. P. Venable) 13 i 



COBB, Collier, 



Notes on the deflective eft'ect of the earth's rotation 



as shown in streams 10 26 



On the geological history of certain topographical 



features east of the Blue Ridge 10 94 



Do snakes charm birds? 10 98 



Sulphur from pyrite in nature's laboratory 11 30 



Recently discovered mineral localities in North Caro- 

 lina 20 38 



Notes on the geology of Currituck Banks 22 17 



Where the wind does the work 22 80 



