Incomplete memorandum on the construction of the framework of Lord [William Parsons] Rosse's telescope, by Sir John Frederick William Herschel Notes in Sir John Frederick William Herschel's hand based on the photographs of the Leviathan of Paronstown at Birr Castle, Ireland. Consider that the constuction with wooden stand and bank ladders may contain an element of instability "for a telescope of this size". Includes a schematic of a recommended possible base. 1840s