Paleozoic species of Vetacapsula and Palaeoxyris. Summary of progress of the Geological Survey of Great Britain and the Museum of Practical Geology for 1927, part II: 87–108
Further morphological studies in Palaeoxyris, etc. Summary of progress of the Geological Survey of Great Britain and the Museum of Practical Geology for 1929, part III: 8–36
The nature and affi nities of Palaeoxyris, etc. Summary of progress of the Geological Survey of Great Britain and the Museum of Practical Geology for 1931, part II: 122–140