iv Contents. 



7. Ernest J. Palmer. — Flora of the Grand Falls 



Chert Barrens. — Issued December 15, 1910 . . 97 



8. H. E. Ewing. — New Acarina from India — 



Plate XXXV.— Issued December 29, 1910. . 113 



9. Charles R. Keyes. — The Guadalupan Series: 



and the Relations of its Discovery to the 

 Existence of a Permian Section in Missouri. — 

 Abundance of Meteorites on the Painted Des- 

 ert; and its Bearing upon the Planetesimal 

 Hypothesis of the Origin of the Earth. — 

 Issued December 29, 1910 123 



10. C. H. Turner. — Ecological Notes on the Clado- 



cera and Copepoda of Augusta, Georgia, with 

 Descriptions of New or Little Known Species. 

 Plates XXXVI-XXXVIIL— Issued Decem- 

 ber 31, 1910 151 



11. Title Page. Prefatory Matter and Index of 



Vol. XIX. Record January 1, to December 

 31, 1910.— Issued March 29, 1911. 



List of Authors 177 



General Index 178 



Index to Genera 180 



CORRECTIONS. 



P. 3, line 12 — For Thompson read Thomson. 



9 from bottom — For ironization read ionization. 



6 from bottom — For ironized read ionized. 

 P. 6, last line — Read used. 

 P. Ill, line 8— After Heller insert * 

 Plate XXIV. Figs. B and C should have been transposed. 



