TENTH ANNUAL REPORT. 



Ill 



personal instruction to teachers in caring for small marine col- 

 lections. 



The total number of teachers and students visiting the Labora- 

 tory of the Aquarium during the year was over 4,000. 



ATTENDANCE. 



During the year 1905 the attendance at the Aquarium was 

 1.726,170 persons, an increase over that of 1904 amounting to 

 100,400. The daily average of visitors for the year was 4,729. 

 The following table shows the attendance at the Aquarium in 1905 

 bv months : 



January . , 

 February 

 March . . 

 April ... 



May 



June 



July 



August . . 

 September 

 October . 

 November 

 December 



Total number visitors 79,849 Daily average 2,580 



70,048 

 122,594 

 157-161 

 183,784 

 161,336 



197.139 

 218,621 

 181,846 

 159.561 

 100,193 

 93-938 



Total 1,726,170 



2,501 

 3.955 

 5.238 

 5.929 

 5.374 

 6,361 



7.052 

 6,030 



5.147 

 3.339 

 3.030 



4-729 



The total number of visitors to the Aquarium during the nine 

 years that it has been open to the public is 14,996,759. 



DENSITY RECORDS. 



The daily records which have been kept at the Aquarium show- 

 ing the density of the water with which the marine collections are 

 supplied now extend over a period of three years. 



Attention has previously been called to the disadvantage of 

 maintaining ocean forms of life in highly brackish water. This 

 drawback wall disappear at an early date with the installation of 

 stored sea-w^ater, toward which end much of the improvement 

 work going on in the Aquarium has been steadily directed. 



The density records themselves have both practical and scien- 

 tific values in showing what may be expected from month to 



