566 
Trifolium subterraneum, found in 
Ireland, 268. 
Troglodytes Gorilla, muscular anatomy 
of, 501. 
Tuning Fork, on alleged imperfections 
of, 238. 
Ursae Majoris, |, new approximation to 
the orbit of, 316. 
Viverra civetta, muscular a.natomy of, 
506. 
Vortex rings in air, an account of 
experiments upon the motion of, 113. 
Weather, daily reports, on the reduction 
of, 253. 
Zinc substituted for Magnesium, 533. 
Ziphius Sowerbi captured (second time) 
on Irish coast, 49. 
END OF VOLUME I. 
