seasonal trends, since the series of samples are too few in number. 

 The Crustacea were quite abundant as compared with the averages of 

 stations in the Island Section, particularly in the year 1929 (see 

 Tables 69 and 70) . 



Maumee Bay Section 



In this section samples were taken at the three regular 

 stations (2^0, 2^2, and 2$U) . Sampling was started somewhat later 

 here than in the Island Section and fewer samples were taken, so 

 that data on seasonal distribution is much less complete. However, 

 enough samples were taken to bring out some well defined differences 

 between this section and others in the lake. 



The results obtained from Station 250, located immediately 

 outside the mouth of Maumee River, are shown in Table 73. Diaptomus 

 vjas rare here in both years, while Cyclops was abundant in both years. 

 It will be remembered that in the Island Section Diaptomus was the 

 abundant form in 1929, and Cyclops in 1930. Another obvious differ- 

 ence is in the large number of nauplii at Station 250, especially in 

 1929. This is the only station in the lake which had more than 100 

 nauplii per liter at any time. The numbers of Daphnia fluctuated 

 considerably, but the form was fairly abundant in both years. 

 Diaphanosoma was rare in both years, except for the sample of September 7, 

 1529. The rotifers were very abundant in every sample taken in 1930, 

 The principal ways in which this station differs from those in the 

 Island Section are in the rarity of Diaptomus, and in the greater abun- 

 dance of Cyclops, nauplii and rotifers. 



The data for Stations 252 (Toledo Light) and 251: (Range Lights) 

 are shown in Tables 7h and 75. To avoid undue repetition, we may 

 omit separate discussion and pass on to a comparison of the data from 

 the three stations (Table 76). In 1929> samples were not always taken 

 at all three stations on the same date, hence comparisons are made 

 between Stations 250 and 252, and between Stations 252 and 25U. 

 Samples were taken at Stations 250 and 252 within a short period of 

 time on 5 dates. It will be noted that the differences between these 

 two stations were of the same kind as between Station 250 and the 

 Island Section. Diaptomus was much more abundant at the station four 

 miles out in the bay than at the one near the river. Cyclops was less 

 abundant, as were the nauplii. The Cladocera were somewhat more 

 abundant. 



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