76 LEJEUNEA HOLTIH, A NEW HEPATIC FROM KILLARNEY. 
when at the cataracts of the Rio Negro (lat. 0° 7’ S.), I went one 
day into the forest to shoot something for my dinner, and was fain 
to content myself with a spider-monkey, which I picked off the top 
of a tall slender tree while conversing with its mate. It fell into a 
but it was a night of bright moon. Scarcely had the canoe been 
O 
by monkeys, some kinds of which are far travellers, and by migrating 
birds : those aquatic birds and waders, for instance, that pass some- 
thing like half the year on the Amazon and the other half on the 
inoco, where those rivers are a thousand miles apart. 
To pass from the equator to latitude 54°15’ N. Here, in North 
upper strata are usually softer h er, are soon 
n sand martins and rabbits, to whom is probably owing 
the beginni of moss-vegetation. The martins, our earliest 
migrants of the swallow-tribe, may even bring with them germs of 
the moss-flora of countries b rdering the Mediterranean, most of 
whose species are identical with those of our own flora, and all are 
