Has a sufficient quantity of heavy glass at his disposal and offers some to JH.
Has a sufficient quantity of heavy glass at his disposal and offers some to JH.
No summary available.
No summary available.
A collection of birthday greetings from JH, his wife, Margaret, and seven of their children, six of whom wrote their greetings in German. JH refers to Biela's Comet having thrown off a portion of itself, producing what JH calls a 'Double Comet.'
Printed notice of thanks for memoir presented by JH.
No summary available.
No summary available.
No summary available.
Circular announcing that [Theodor] Brorsen in Kiel has discovered a new comet. HS adds note that F. W. Bessel has died.
No summary available.
No summary available.
Thanks for the Cometen Circular. Observations of comets he has recently carried out. Thanks for the book on the telescope of William Parsons (3rd Earl of Rosse).
Discovered an agent that renders his paper tough and waterproof. Sends sample for JH's inspection. Treated paper is highly explosive and can discharge a gun.
No summary available.
Received JH's check for £300 for Harris family. Measurements of Gamma Virginis made by W. R. Dawes under GB's direction. Will send future observations to JH.
C. G. Ehrenberg wants specimen grasses from Ascension Island.
No summary available.
Sends copy [of "Fine dust in the Atlantic Ocean", Collected papers 1: 199–202]. Attempting to obtain further samples for CGE.
JDH recognises the existence of "altered states" of continental species in island floras. The botanists’ difficulty in determining a new species is no grounds for dismissing the important question of altered forms.
Will look for Ascension plants for Ehrenberg.
French Galapagos collections confirm JDH’s view that plants arrived from north.
Cannot agree with Forbes on North Atlantic flora.
Botanical definition of "highness" and "lowness" usually means complexity and simplicity.
Some plants, such as aquatic ones, are cleistogamous. Cannot see why they should not be.
No summary available.