Talk:John Pentland Mahaffy

	Biography portal This article is within the scope of WikiProject Biography, a collaborative effort to create, develop and organize Wikipedia's articles about people. All interested editors are invited to join the project and contribute to the discussion. For instructions on how to use this banner, please refer to the documentation.BiographyWikipedia:WikiProject BiographyTemplate:WikiProject Biographybiography articles
	This article is supported by the science and academia work group (assessed as Low-importance).

Ireland Mid‑importance

	Ireland portal This article is within the scope of WikiProject Ireland, a collaborative effort to improve the coverage of Ireland on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.IrelandWikipedia:WikiProject IrelandTemplate:WikiProject IrelandIreland articles
Mid	This article has been rated as Mid-importance on the project's importance scale.