79 Part IIT.—Twenty-seventh Annual Report 
The depth of water at Stations III. and IV. is much less than at the 
others, and scarcely reaches to thirty fathoms ; therefore, as indicated by 
the Table given above, fewer hauls were taken at these stations. 
As the gatherings were collected at different times of the year, as well as 
at different stations, they tend to indicate approximately the general 
distribution of the pelagic crustacea present in Loch Fyne during the four 
years referred to. The gatherings also exhibit evidence of local variation 
in the distribution of these organisms, and to some extent seasonal 
differences are also indicated ;* but before this latter result could be satis- 
factorily dealt with the observations would require to be continued over a 
longer period. 
The nets used were of a uniform size and fineness of mesh, but a few 
special hauls made off Inveraray, and at Station I. in October 1906, were 
taken, some of them with a large “‘ mid-water net,’ and others with a 
““ ying-net.” 
Pelagic Copepoda formed a large portion of the contents of the varions 
gatherings, the most common species being Calanus helgolandicus, Claus ; 
many of the hauls consisted almost entirely of this species. Other forms 
were sometimes met with, but they seldom occurred in large numbers. A 
list of the species observed is given at the end of this paper. 
The following is a short description of the quantities and contents of 
the gatherings collected during the four years at the different stations 
mentioned above. The quantities are given in cubic centimetres (c.c.’s).T 
The stations are taken in the order in which they occur in the Table. 
Sratron I.—Lower Loc Fyne. (E. or BarmMorE PENINSULA.) 
1905, 
’ 
The total number of gatherings from this station is about one hundred 
and four. Forty-nine of these were collected during 1905, and are 
shortly described below. 
FEBRUARY.—Seven gatherings were collected in February. They com- 
prised two horizontal and five vertical hauls. One of the horizontal hauls 
was collected at the surface, and one was a mid-water gathering; their 
contents, which measured about 25°5 and 10 c.c.’s respectively, consisted 
for the most part of Calanus. The vertical hauls were from 30, 45, 60, 
75, and 90 fathoms. The haul from 30 fathoms measured 2:5 c.c.’s, that 
from 45 fathoms was badly preserved; the others, like that from 30 
fathoms, were small gatherings, and measured respectively 2°5, 2:5, and . 
1‘5 c.c.’s, and consisted for the most part of Calanus. The only other 
organisms observed were a few fish ova (in the surface gathering), a few 
Hucheta norvegica, Bradyidius armatus, Pseudocalanus elongatus, young 
Mysis sp., Sagitta and Z'omopteris. 
Marcu.—The eight gatherings collected in March included three 
horizontal hauls—one taken at the surface, one at mid-water, and one near 
*See pp. 94-96, tables for Stations III. and IV. ; compare quantities for May 
1905 and 1906 with those for 1907 and 1908 for the same month. 
+ The quantities of the various gatherings were estimated by my colleague, 
Dr. Williamson, as explained below, and he has kindly allowed me the use of his notes 
thereanent. A noted quantity of water was put into a glass measure graduated in 
centimetres. The tow-net collection was then poured out on to cheese-cloth similar 
to that of which the tow-nets are made. The mass of Copepoda was then transferred 
by means of a scapula to the glass measure, and the volume of the water and Copepoda 
was noted. From that amount the volume of the collection was found by sub- 
tracting the original quantity of water. When the Copepoda were on the cheese- 
cloth a certain amount of the formaline solution in which they were preserved 
was included in the mass. No attempt was made to remove this, except that, 
when the collection was a large one, it was gently pressed with the fingers till the 
excess of fluid ran off. 
