Having read with much interest Mr. Murphy's papers in the journal of the Geological Society for 1869 (p. 350) and for 1876 (p. 400), in which he maintains that at the time of maximum excentricity of the Earth's orbit that hemisphere would be glaciated which had its winter in aphelion, as against Mr. Croll, whose theory is that the glaciated hemisphere would be that which had its summer in aphelion: it has occurred to me that I have never seen, in this discussion, any reference to the case of the planet Mars.

In the present state of our knowledge of the Devonian formation, it seems highly desirable, if possible, to correlate any of the beds in Devonshire with those of this wide-spread formation on the Continent.

The well-known genus Trochammina was instituted in 1859 by Messrs. Parker and Jones as a sub-genus for the reception of an arenaceous foraminifer, the Rotalia (Nautilus) inflata of Montagu.

As Dr. Anton Fritsch of Prague has brought the relics of Permian animals (Sauria and Fishes) from the Gas-coal of Nürschan and from the “Schwarte,” near Rakonitz, before the Meeting of the British Association at Glasgow in September last, it will certainly not be without interest, to give some geological and historical notes on this most important occurrence, and I may, I trust, be allowed to do so in the Geological Magazine.