Rey. D. Landsborough on the Phosphorescence of Zoophytes. 169 
but, on the contrary, during the whole of my journey between 
Trondhjem and Christiania the oat-harvest was still going on, 
as it had been when | went from Christiania to Trondhjem. 
Those who have traversed mountainous countries, and who 
are acquainted with the influence of secondary causes in such 
places, will not be surprised at these apparent singularities. 
Thus, in Hedemarken, a very moist plain, the seed-time is 
extremely late, and consequently the harvests are so likewise ; 
on one of the banks of the great lake Midsen, the harvest is 
much earlier than on the other bank, the former having a 
southern exposure. 
It is known that, in northern counties, the shortness of the 
summer is compensated by the length of the days, and that in 
them vegetation goes through its various states in a much 
shorter time than in more southern regions. On leaving Chris- 
tiania on 10th September, it was nearly in the state which it 
attains in the middle of France during the last weeks of the 
same month ; at Roraas, one of the most elevated points of 
the Scandinavian chain, where the mercury freezes every year, 
and where the Betula nana grows in abundance, vegetation 
appeared on the 14th September in the same condition it ex- 
hibits among us in the earlier weeks of November ; that on 
the banks of Guldelf, ata little distance from Trondhjem, had 
reached the same point on the 20th September as that of 
France during the last weeks of October ; finally, in Dovref- 
jeld, at a height of 3000 feet above the level of the sea, vege- 
tution appeared, on the 22d September, such as we see it in 
Sologne in the earliest days of December.* 
On the Phosphorescence of Zoophytes. By the Rev. Dayiw 
Lanpssoroveu, of Stevenson, in Ayrshire.t 
Dr Johnston, in his “ History of British Zoophytes,” quotes, 
in his description of Sertularia pumila, the following passage 
from Stewart :—“ This species, and probably many others, in 
some particular states of the atmosphere, gives out a phos- 
phoric light in the dark. Ifa leaf of the above Fucus serratus 
* Comptes Rendus, No. 18, 2d Nov. 1841, p. 882. 
+ Annals of Natural History, vol. viii. p. 257. 
