No summary available.
No summary available.
No summary available.
Happy that JH may be leaving Mint and returning to scientific pursuits. HW resumed work on equations in finite differences. Hopes to reconcile discrepancy between JH's and P. S. Laplace's solutions. JH's solution renders only particular, not general, solutions.
Calculating small number of species in aberrant genera of insects and plants.
Joachim Barrande’s "Colonies", Élie de Beaumont’s "lines of Elevation", Forbes’s "Polarity" make CD despair, as these theories lead to conclusions opposite to CD’s from the same classes of facts.
George Bentham’s list of aberrant plant genera. JDH appended the number of species in each genus according to E. G. Steudel’s catalogue [Nomenclator botanicus (1840–1)] and according to JDH and Bentham.
JDH speculates on effect of splitting Australia longitudinally on distribution; it becomes an argument for new creations.
No summary available.
No summary available.
Approves of JH sharing HW's findings. HW on excellent terms with Augustus De Morgan. Suspects two integrals exist, one real and one imaginary, for P. S. Laplace's equation.
Asks JSH to inquire about drift-wood at Kerguelen Land.
Hooker’s observation on similarity of Kerguelen plant species to those of Tierra del Fuego strikes CD as a great anomaly, so he is searching for an answer, "however improbable".
No summary available.
Requests authoritative information on erratic boulders and marks of glaciers in New Zealand, and especially in southern islands.
No summary available.
No summary available.
In response to CD’s query, HCW says he cannot supply "any list of species as the flora of a single and sterile soil". Suggests a possible source of information, and provides some figures for Britain, but these apply to diverse soils.
No summary available.
Sends a count of the number of species of flowering plants and ferns on the islands of Fayal and Flores in the Azores.
Recent gold from Bank of England exhibits unusual properties in melting. Add 0.0005 extra alloy to each ingot.
Grief at the death of Edward Forbes.
No summary available.
No summary available.