Has reduced 20 Cyrena species to geographical varieties of one species, Cyrena fluminalis. Hooker is reducing Indian flora at the rate of 19 to 1.
Recommends W. H. Harvey’s Seaside book [1849] and Charles Pickering’s Races of man [1850].
Has reduced 20 Cyrena species to geographical varieties of one species, Cyrena fluminalis. Hooker is reducing Indian flora at the rate of 19 to 1.
Recommends W. H. Harvey’s Seaside book [1849] and Charles Pickering’s Races of man [1850].
Lists Lusitanian shells with wide ranges beyond that geographical province.
Antiquity and elevation of land mass is more important than latitude for the distribution of shells.
Comments on one of the magnetism experiments JH described in his letter of 1856-7-14.
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.
Describes R.S.L.'s compound magnet. Recommends cleaning and remagnetizing. Awaits JH's instructions.