- TitleAls J H Lefroy to Francis Ronalds
- ReferenceUK0108 SC MSS 001/3/499
- Date1850-12-26
- Scope and ContentHe has brought with him to England the vertical force magnet and its support from Ronalds' magnetograph. He has not been able to give the magnet any reasonable degree of sensitiveness. He proposes coming to Kew on Monday.
- Physical descriptionNumber of pieces: 1, Pages/folios: 2
- LanguageEnglish
- Persons keywordLefroy John Henry Captain
- SubjectMagnetographs
- Conditions governing accessOpen
- Level of descriptionfile
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