1882.] 
Notes. 
501 
M. G. Hayem (“ Comptes Rendus ”) traces the spontaneous 
cessation of the escape of blood from an injured vessel to the 
hasmatoblasts, which, on coming in contadl with the edges of the 
wound, adhere to it, and gradually accumulate till they block up 
the aperture. 
Prof. V. Graber (“ Archiv. fiir Mikros. Anatomie) has made a 
series of experiments on the hearing of insedts. He found a 
common cockroach, two beetles (species ?), a Chrysopa , and a 
house-fly very sensitive to sound, whilst the larva of the cock- 
chafer and several species of ants gave no marks of recognising 
the strongest sounds and noises. Water-bugs of the genus 
Corixa were much excited by sound, whilst mechanical agitation 
of the water did not seem to disturb them. 
L. O. Howard (“ American Naturalist ”) finds that Metapodius 
femoratus , a large field-bug, sucks the juices of the caterpillar of 
Leucania unipuncta , the “ Northern army worm,” and leaves the 
exhausted and shrivelled corpse suspended over a forked branch 
of May-weed ( Maruta cotula). “ The whole long line of May- 
weeds was garnished with the empty skins of Leucania larvae, 
each carefully hung over the fork of a branch.” 
Mr. Chichester Ward (“ Report on Botany of Polar Regions”) 
notes that in the low grounds of Southern Greenland true blue 
flowers, such as Veronica alpina, are rarely met with, whilst 
true reds never occur. 
W. Irvine Fortescue (“ Scottish Naturalist ”), in a paper on 
the flowering plants and ferns of the Orkneys, states that Fuchsia 
magellanica thrives in the open air in Orkney, and that Phormium 
tenax flourishes in North Ronaldshay. 
The “American Naturalist” complains, with justice, of an 
additional tax on knowledge with which the student in the United 
States has to contend. Books coming through the foreign posts 
are charged with an import duty of 25 per cent if the value ex- 
ceeds a dollar. A number of tedious formalities are also 
required, and there is of course the risk of the book disappearing 
altogether. 
S. A. Forbes (“ American Naturalist ”) mentions that “ if there 
were no Entomostraca for young fishes to eat, there would be 
very few fishes indeed to prey upon Mollusca, and that class would 
flourish almost without restraint. On the other hand, if there 
were no Mollusca for the support of adult fishes, Entomostraca 
would be relieved from a considerable part of the drain upon 
their numbers, and would multiply accordingly. 
M. J. Rossbach (“ Med. Central-BIatt.”) has observed that 
whilst the blood of a healthy rabbit is free from moving organisms, 
immediately after the injection into a vein of 0^05 to o*i grm. of 
the vegetable ferment papayotine, the blood swarmed with true 
