Collected writings, 1914-1935
By: Roy J. Colony
Publisher: [publisher not identified]
Published: 1936
Place of publication: Place of publication not identified]
Language: eng
Subjects: Geology
Work titles: Works
Notes: Consists of 20 pamphlets; title from inserted t.p.

Includes bibliogrphical references.
Table of contents: title: 1. Petrographic study of Portland cement; title: 2. High-grade silica materials for glass, refractories and abrasives; title: 3. A norite of the Sudbury type in Manitoba : a reconnaissance; title: 4. Judging the quality of Portland cement; title: 5. The magnetite iron deposits of southeastern New York; title: 6. Final consolidation phenomena in the crystallization of igneous rocks; title: 7. An unusual quartz-diamond intergrowth; title: 8. Field work in the Schunemunk region during 1924; title: 9. Some problems in the Schunemunk area; title: 10. A feldspar-chalcopyrite rock-ore from Sonora; title: 11. The copper prospect at Barrio Pasto, Porto Rico; title: 12. The lavas of the volcano Sumaco, eastern Ecuador, South America; title: 13. Mining geology in 1929; title: 14. Restudy of the geology of the Saratoga area and the problems of the mineral waters; title: 15. An investigation of the constitution of Portland cement and properties of cement components with relation to disintegration of concrete; title: 16. Metamorphic and igneous rocks of eastern Ecuador; title: 17.  Source of the sands on the south shore of Long Island and the coast of New Jersey; title: 18. Structural geology between New York and Schunemunk Mountain; title: 19. Observations on spherulites; title: 20. The magnetite deposit near Humacao, Puerto Rico.