Comments on GS's ideas [see GS's 1856-6-27] about the nature of fluorescence. Asks for strong horseshoe magnets from R.S.L. to try to solve the problem of 'Mahomet's coffin.'
Comments on GS's ideas [see GS's 1856-6-27] about the nature of fluorescence. Asks for strong horseshoe magnets from R.S.L. to try to solve the problem of 'Mahomet's coffin.'
Death of his sister a blow to John Bullar [father of writer].
Recent observations of specified stars and their variations.
Further thoughts [see GS's 1856-6-27] on the nature of fluorescence, including that it is a transient phosphorescence.
Continues comments on fluorescence from letter of 1856-7-8; then shows mathematically that JH's solution for the problem of Mahomet's coffin [see GS's 1856-7-1] will not work.
Thanks for the magnetic theory [see GS's 1856-7-9] and agrees it argues against JH's ideas about Mahomet's coffin. Describes some interesting magnetic experiments JH has seen.
Comments on one of the magnetism experiments JH described in his letter of 1856-7-14.
Describes R.S.L.'s compound magnet. Recommends cleaning and remagnetizing. Awaits JH's instructions.
Their whole family is grateful for JH's letter of sympathy to JB's father.
Is concerned about the receipt of AH's accounts; lectures AH about the danger of moving into someone else's room [more luxurious] for the vacation; finally asks AH to discover who among the 'university-men' is color-blind, and to what degree.
Deposit enclosed money at Cadet House for John Herschel's readmission [to Addiscombe].
Will give him great pleasure to call at Collingwood in the near future. Grieved to hear of JH's illness. Begs acceptance of a set of papers of Dr. William Griffith.
Sending a pamphlet, which may give JH some amusement.
No summary available.
At the recent A.G.M. of the R.A.S. Club, JH was elected an Honorary Life Member. Hopes he will attend many more meetings.
Recently came across some instructions JH had drawn up for persons who are color blind. Sends a note explaining the work of William Pole on this same subject. Has left the manufactory at Ipswich.
Pleased to hear from Capt. E. W. Ward's letter that JH still remembered him. Grieves to hear of his bad health. Mint at Sydney is progressing. Rich gold fields at Victoria. Looks forward to the re-establishment of steam communication.
Sends copy of Admiralty Manual, which includes JH article on meteorology. Asks TM what to do with Bokkeveld meteorite specimen still in his possession.
No summary available.
Thanks for papers on diamagnetism and lecture on 'slaty cleavage.' Compares with phenomenon of 'ringing coins' in mint. Explains with examples conformity of JT's views with JH's own on geological stratification. Praises simplicity yet completeness of JT's work.