Scientific Intellig ence. '^Zoology. 1 85 
twenty-five days, presented two dead foetuses, one of which 
might have been of about six days and the other twelve. He 
attributed the failure to the great quantity of electricity diffused 
through the atmosphere during the month of June of this year. 
M. de Gabriac allowed his parrots to rest for ten days, and put 
them together again on the 1st July. On the 14th, the female 
again laid an egg, which, as at first, was accompanied with three 
others, on the 17th, 20th, and 23d. It was always at six or seven 
in the evening that they were laid. On the 6th August, the 
first egg was hatched, and the rest on every succeeding third 
day ; that is to say, on the Oth, 12th, and 15th, all in the even- 
ing, about the time at which they had been laid. The observa- 
tions of M. de Gabriac prove, that, in this species of parrot, the 
period of incubation is twenty-three days. When first excluded, 
the young are covered with a grey down. At the time when 
M. de Gabriac published his notice, his young parrots were al- 
ready two months old. This is the second instance of parrots 
breeding in France. M. Lamouroux, Professor of Natural 
History at Caen, read to the Linnean Society of Paris, a me- 
moir upon Blue Aras (Psittacus Ararauna) bred in France, 
The parent birds belonged to M. Esnault, also of Caen, to 
whom they laid, from the month of March 1818, to the month 
of August 1823, 62 eggs in all, at nineteen different times. Se- 
veral trials of the same kind have been made within these few 
years, and the results have been satisfactory. Every thing 
leads us to hope that we may one day be able to multiply in our 
aviaries the greater part of the numerous species which compose 
the beautiful family of parrots . — Bulletin Universel. 
20. Splendid Luminosity of Sea Animals ^ observed by Kuhl, 
in Lat. 24° A., Long. 12°, in Oct. 1820.— ‘‘ M. de Humboldt 
has observed, that galvanic electricity is without visible influ- 
ence upon the medusae. The same can be said of the Pyroso- 
mata, although there is a vestige of nervous system in them. 
The Biphora also, as well as the pyrosomata, when preserved in 
a bottle, make the temperature of the water rise nearly one cen- 
tigrade degree. The Pyrosoma atlanticum^ the only species 
hitherto observed by us, diffuses, while swimming beneath the 
surface of the sea, a light of a foot and a half in diameter. Only 
imagine the superb spectacle which we enjoyed some days ago, 
