268 The Microscope. [cHAP. Xv. 
parasites found on a short sun-fish taken near Banff. “The 
genus,” said Edward, “is very little known in this country. 
It has hitherto been found only on the flying-fish. It seems, 
however, to frequent the sun-fish. This was not previously 
known. When once these creatures take a firm hold, it is 
impossible to shake them off or get rid of them, they sink 
so deep into the animal’s body. There are from two to 
three longish barbs which protrude from the neck, close to 
the head, and which appear to serve exactly the same pur- 
pose as the barb does on the hook. One which I cut out 
—and no easy matter it was—had its head sunk at least 
an inch and a half into the fatty ridge of the fish. In 
the Illustrated London News of July 10th, 1858, there is 
an illustration given of a flying-fish with a parasite attached 
to its back, and having a lot of barnacles adhering to it. 
The fish here figured is said to have leaped from the sea 
into the mizzen chains of the East-Indiaman Monarch, while 
on her homeward voyage from Calcutta, The parasite in 
that case was quite different from the one I obtained from 
the sun-fish. It was there called Pennella Blanvilliz.” 
In one of his communications, Edward sent Mr. Bate 
some parasites which he had taken from the gills of a crab. 
Many of the crustaceans found by him were so minute that 
they could scarcely be examined in detail with the naked 
eye. Mr. Bate accordingly,.with great kindness, made Ed- 
ward a present of a microscope to enable him to carry on 
his minute investigations. ‘It is,” said Mr. Bate, in his 
letter announcing the departure of the parcel, “what we 
call a simple microscope, and I think you will find it adapted 
for examining things out of or in doors. It is made porta- 
ble, and can be used upon the rocks as well as in a parlor. 
It is similar to one which*I use myself for every thing, ex- 
cepting when I examine into structural anatomy. I was 
not able,” added Mr. Bate, “to have it prepaid farther than 
Bristol; so I beg to inclose a few stamps, which I hope will 
cover it for the remainder of the way.” 
