93 Part III. — Twenty -seventh Annual Report 



45 and 60 fathoms measured respectively 19 and 21 c.c.'s. These gather- 

 ings showed that the distribution of Calanus was fairly uniform from 15 

 fathoms downwards. 



June. — The gatherings collected in June showed a moderate increase in 

 the various catches except that from 30 fathoms, which amounted only to 

 about two-thirds of that for May from the same depth. The gatherings 

 from 15, 30, 45, and 60 fathoms measured respectively 29, 11, 30, and 32 

 c.c.'s. Two other hauls from 78 and 80 fathoms measured each 50 c.c.'s. The 

 contents of these various hauls were similar to those previously described. 



August. — The five hauls collected in August exhibited still further 

 changes in the distribution of the pelagic Crustacea, and there also 

 appeared to be a falling off in the number of these organisms in the upper 

 strata, and at the same time a marked increase towards the bottom of the 

 loch. While the gatherings from 15, 30, and 45 fathoms measured 

 respectively 6*5, 135, and 23'5 c.c.'s, those from 60 and 75 fathoms 

 measured, the one 41 and the other 100 c.c.'s. 



September. — All the gatherings collected in September were small, 

 showing that a considerable decrease in the number of pelagic Crustacea 

 all over the loch had taken place since the station was visited in August. 

 The hauls, taken in the same order as before, measured respectively 2*5, 2, 

 3, and 6 c.c.'s, and though Galanus continued to be the more common 

 species, there appeared to bfi a larger number of Euchceta present, 

 especially in the haul from 60 fathoms. In this haul Eucheta formed 

 about 1 per cent, of the gathering. A few specimens of Pseudocalanus 

 were also observed, as well as a small number of Sagitta. 



November. — Three .vertical hauls were collected in November. One 

 from 15 fathoms was nearty blank. A gathering from 45 fathoms was 

 also small, and measured only 1 c.c. It consisted chiefly of Calanus, 

 together with a small number (about 2 per cent.) of Euchceta norvegica. 

 A third haul from 60 fathoms was moderately large, and measured 20 c.c.'s, 

 and, like the others, it consisted for the most part of Calanus. A few 

 Euchobta, Rhoda raschi, and a small number of Sagitta were also present. 



December. — The gatherings collected in December from 15 and 30 

 fathoms measured only *5 and 1*5 c.c's., that from 45 fathoms was some- 

 what larger, and measured 6'5 c.c.'s. Below this pelagic Crustacea were 

 met with in considerable abundance ; hauls taken at 60 and 70 fathoms 

 measured respectively 47 and 90 c.c.'s. 



Other Gatherings Examined. 



A few gatherings were collected in the vicinity of Skate Island in April 

 1905 and June 1906. The former comprised three horizontal hauls and 

 five vertical ones, and the latter, four hauls, which were also vertical. 

 Three vertical hauls were also taken off Minard, two in March and one in 

 November 1908. All these gatherings, collected with the usual tow-nets, 

 did not differ greatly in their contents from those taken in other parts of 

 Loch Fyne. 



In October 1906 several hauls were made off Inveraray and also off 

 Newton with a large " mid-water " net, and considerable quantities of 

 Calanus, Euchmta norvegica, Nyctiphanes norvegicus, and Rhoda raschi were 

 captured, but with the exception of a quantity of Sagitta little else was 

 observed in these gatherings. 



The following tables show the number of vertical hauls collected at each 

 of the six stations mentioned in the preceding notes, the year and month 

 when collected, and the depth from which the various hauls w T ere taken. 

 The quantity of each haul is also stated, in most cases in cubic centi- 

 metres (c.c.'s), but some hauls which measured less than 1 c.c. are marked 

 " sm." — small. The horizontal hauls are left out, as no such gatherings 

 were taken after 1905. 



