54 



DEPARTMENT OF THE NATAL SERVICE 



Station 3. — Station 3 is situated in the bay of Fundy, eleven miles southeast of 

 Swallow Tail Light, Grand Manan. The results of monthly collections from the 

 first of January to the end of July are recorded in Table V. 



TABLE V. 

 Station 3. — January-July. Sm. Tows. 



A comparison with the previous tables, immediately reveals the similarity of the 

 flora to that of Station 6 ; but the more exposed waters of the bay of Fundy are clearly 

 not so favourable to diatom production, for at all seasons the number, both of species 

 and individuals, is greatly reduced. One new species, Chaetoceras atlanticum, is the 

 only addition to the former records; and Ch. danicinn is found to persist throughout 

 the year. 



Other stations. — The remaining stations lie in the order 10, 4, 9, 1 in the channel 

 leading from the Biological Station toward the bay of Fundy; and Station 5 is in 

 the bay of Fundy, midway between the northern end of Campo Bello and The Wolves. 

 As only surface tows were taken at these points, the resvilts recorded in Tables VI 

 and YII do not bear comparison with those of the former tables. They serve in 

 themselves, however, as a means of comparing the floras of the different localities. 

 Two seasons, Octcber and May, are presented. As the result of an accident the 

 October material of Station 5 was lost before a count was made; the species found 

 are, therefore, merely marked in the table, and I may add that I have recorded that 

 the diatoms present were few. 



As would be expected from the force of the constantly changing tides, it is the 

 predominant forms which prevail over the whole area. , "No form attains its maximum 

 at one particular i>oint. Thus in May Chaioceras dehile, Ch. sociale and Thalas- 

 siosira. are always present in large numbers ; and in the autumn the prevailing 

 species Thalassiothrix longissima. Bhizofsolenia shrulisolei and Ditylium Brighiwelii 

 are taken at every point. The constantly persistent forms, Chaetoceras diadenui anrl 

 Coscinodiscus appear uniformly at all stations at both seasons, while the less abundant 

 forms are occasionally obtained at the various points Two species, Isthmia n-^rvosa 

 ahd Isthmia enervis, obtained at Station 1, are the only additions to the previous 

 lists. 



In brief we may conclude that with respect to seasonal distribution the memberg 

 of the phytoplankton may be included in three groups : firstly, those species which 



