pp. Price 
GAGE, J:..8. R., Results of Investigations of Indian Mounds, 
RILEY, CHAS. V., Descriptions and Natural History of Two 
Insects Which Brave the Dangers of Sarracenia Variolaris. 
RILEY, CHAS. V., Descriptions of Tvc New Moths, 
HAYES, RICHARD, Catalogue of HEarthcquexes for the Years 
1872-73 
SCHMIDT, ADOLF, On the Forms and Origin of tho Lead and 
Zinc Deposits of Southwest Missouri. 
MARCOU, JULES, On the Terebratula Mormonil. 
SAWYER, AMOS, On Climatic Change in Illinois - Its Cause. 64 2.00 
Dee oak eek 
SCHMIDT, ADOLF, Iron Manufacture in Missouri; A General 
Review of the Metallurgical Districts and Their Resources, 
RILEY, CHAS. V., Romarks on Canker-Worms and Description 
of a New Genus of Phalaonidac. 
RILEY, CHAS. V., Notcs on tho Natural History of the Grape 
Phylloxera,. 
NIPHER, FRANCIS E., On a New Form of Lecturo Galvanomotor. 
ENGELMANN, GEORGE, Notes on Asave. 
RILEY, CHAS. V., Notes on the Yucca Borer, Merathymus 
Yuceac (Walk.). 
BROADHEAD, G.C., The Rocky Mountain Locust and tho Season 
of 1875. 
BROADHEAD, G.C., The Meteor of December 27, 1875. 
CONANT, A.J., Archacology of Missouri. 
BROADHEAD, G.C., Age of Our Porphyrics,. 
ENGELMANN, G., Addition to Article on Ag aba 
ENGELMANN, G., Addition to Article on Yuc 
ENGELMANN, GEORGE, About the Oaks of the Unitod States....140 2.00 
SEvPEARTE, G., Corrections of the Present Theory of the 
Moon's Motions, iecording to the Classic Eclipses 
CROSWELL, C., Mound Explorations in Southoastern Missouri. 
ENGELMANN, GEORGE, The Oaks of the United States, cont'd, 
RILEY, CHAS. V., On tho Larval Characters and Habits of 
the Blister-Beetles Bolonging to the Genera Macrobasis 
Lec. and Epicauta Fabr.; with Remarks on Other ideale 
of the Family Meloidao. 
RILEY, CHAS. V., On a Romarkable New Genus in Meloidae In- 
fasting Mason-Bee Cells in the United States, 
RILEY, CHAS. V., Additional Notes on Megathymus Yuceae. 
RILEY, CHAS. V., On the Differences Between Anisoptoryx 
Pometaria, Harr. and Anisoptcryx Aescularia, Etc. 
RILEY, CHAS - Ve, A New Oak-Gall on Acorn Cups. 
ENGELIMANN , GEORGE, The Flowering of Agavo Shawii. 
BNGELIAN, GEORGE, The Amorican Junipors of tho Section 
Sabin 
BNGRLMANN, GEORGE, Synopsis of the American Firse....es.ss 202 2.00 
VOLUME IV 680 8,00 
No. I 
HOLM:S, NATHANIEL, Tho Geological and Geographical Distri- 
bution of the Human Race. 
