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Essay on the Classification of Nemertes and Planariae : preceded 

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Transactions of the Royal Irish Academy. Vol. XXII. Part II. 

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Proceedings of the Royal Irish Academy. Vol. IV. 8vo. Dub- 

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Philosophical Transactions of the Royal Society of London, for 

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Proceedings of the Royal Society of London. Nos. 73 - 75, 

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Lists of the Royal Society for 1849-50. 4to. 



Magnetical and Meteorological Observations made at the Royal 

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Catalogue of 2156 Stars, formed from the Observations made 

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Cancels for the Introduction to the Reductions of the Greenwich 

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Address of the Right Honorable the Earl of Rosse, the President, 

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Astronomical, and Magnetical and Meteorological Observations, 

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Observations made at the Magnetical and Meteorological Obser- 

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