1. -Zircons as a Criterion of Igneous or sedimentary Rocks;Armstrong;Amer. Journ. Sci.,1922
2. -Some Aspects of the petrology of Sedimentary Rocks;Boswell;Proc. Liverpool Geol. Soc.,1923
3. ---: The Application of Petrological and Quantitative methods to Stratigraphy;Boswell;Geol. Mag.,1916
4. ---: Notes on Petrographic Methods;Boswell;Geol. Mag,1923
5. ---: Further Consideration of the Petrology of Sedimentary Rocks;Boswell;Proc. Liverpool Geol. Soc,1924