A20 l\<rt III — Eleventh Annual lie fori 



Transparency of Water in St Andrews Bay in 1892. 



Suit ion. 





West End of Station. 





Year. 



East End of Station. 



Year. 



Low Sun, Half- Year. 



High Sun, Half- Year. 



Low Sun, Half- Year. 



High Sun, Half- Year. 





































Max. 



Min. 



Mean. 



Max. 



Min. 



Mean. 



Mean. 



Max. 



Min. 



Mean. 



Max. 



Min. 



Mean. 



Mean. 







3 2 



2-0 



2-8 



5-0 



3 5 



4-2 



3 



•3 



4-0 



3-0 



32 



6-0 



4'0 



47 



3-8 





II. 



3-0 



2-0 



2-8 



5-0 



3-5 



4-3 



3 



■4 



3-5 



3-0 



31 



4-0 



30 



3-6 



3-3 





[II. 



3-5 



2 5 



3-1 



5-0 



3-0 



42 



3 



•5 



3-0 



2-5 



2-8 



o-2 



3-5 



4-4 



3-4 





IV. 



3-2 



10 



2-3 



4-0 



3-0 



3-7 



2 



■8 



3-0 



2-0 



2-5 



5-5 



3-0 



3'8 



3 0 





V. 



5 0 



30 



3 6 



6 0 



3'0 



4-8 



4-0 



4-0 



2-8 



3'2 



6'0 



3 5 



4-8 



3-8 



The mean for the winter half-year is that of five monthly observations, 

 and that for the summer half-year of three observations. 



Grouping these Stations into those near the shore, and those out in 

 the bay, and arranging them in order so that those furthest north and 

 nearest the mouths of the Eden and the Tay come last, the following- 

 figures are obtained : — 



Mean Transparency of the Water in St Andrews Bay. 



Shore Stations — Near the mouth of the Eden. 



Station 



I. W. 



II. W. 



III. W. 



IV. W. 



Mean. 















Summer, 



4 2 



4-3 



4-2 



37 



41 



Winter, 



2-8 



2-8 



31 



2-3 



2-8 



Range, . . 



14 



1-5 



11 



14 



1*8 



Bay Stations — From Kingsbarns to Abertay. 



Station 



V. S.E. 



I. E. 



II. E. 



III. E. 





Mean. 



V. N.W. IV. E. 



Summer, . 



4-8 



4-7 



3-6 



44 



4-8 3-8 



4 4 



White 



3 2 



3 2 



31 



2-8 



I 



3-6 1 25 



31 



Range, 



1-6 



.1 



0-5 



1-6 



m 1 i*8 



13 



The lowest transparency records are those of Station IV., which is so 

 situated that the west end is at the mouth of the Eden, and the eastern 

 end at the mouth of the Tay. 



Comparing the transparencies at the two ends of Station V., which is 

 furthest from the shore, with those of No. IX. of the Firth Stations 

 situated outside the Isle of May, we have 4 - 0 and 3*8 to contrast with 

 6.5 and 7*5. The depth of visibility at the outside of St Andrews Bay is 

 a little less than that near Elie Ness and a little more than that of Fidia in 

 the Firth. 



The temperatures of the surface water when similarly classified are 

 shown in following tables : — 



