A geometrical treatise on conic sections, with numerous examples. For the use of schools and students in the universities. With an appendix on harmonic ratio, poles and polars, and reciprocation Q Science
Chronology and molluscan paleontology of two post-Woodfordian bogs in northeastern Illinois Q Science
Birds of California; an introduction to more than three hundred common birds of the state and adjacent islands, with a supplementary list of rare migrants, accidental visitants, and hypothetical subspecies Q Science
Fossil mollusks from the John Day Basin in Oregon, contained in the Condon Museum of the University of Oregon Q Science
Recherches sur les ossemens fossiles : où l’on rétablit les caractères de plusieurs animaux dont les révolutions du globe ont détruit les espèces Q Science
