DIRECTOR'S REPORT. 419 



advance in many of the statistics of the Laboratory as will appear 

 from the appended lists (i) of the Staff, (2) of the Investigators 

 and Students, (3) the Tabular View of Attendance, (4) the Sub- 

 scribing Institutions, (5) of the Evening Lectures, (6) of the 

 Members of the Corporation. The Treasurer's report and the 

 Librarian's report also show a healthy condition of growth. 

 We have much cause for congratulation, and reason for deep 

 thankfulness to Mr. Crane without whose whole-hearted financial 

 support and intelligent sympathy with our objects, our best 

 efforts must have been comparatively ineffective. 



The number of investigators in attendance was 137 as compared 

 with 129 in 1914, 122 in 1913 and 93 in 1912; the number of 

 students was 105 as compared with 89 in 1914, 69 in 1913 and 

 67 in 1912. The total attendance was 242 as compared with 218 

 in 1914, 191 in 1913 and 160 in 1912. These figures bear testi- 

 mony to the growing appreciation of the facilities furnished by 

 the Laboratory both in research and in instruction. The number 

 of institutions represented by these workers was 79, which is 

 almost the same as in the two preceding years ; the increase was 

 therefore due to larger attendance from certain institutions. 

 Indeed no considerable increase in the number of institutions 

 represented is to be expected, because practically all of the larger 

 institutions of higher education in the East and Middle West 

 are represented each year, and the variations from year to year 

 are accounted for by fluctuations of a more or less fortu* _ -ecu's 

 character among the smaller institutions represented. 



The receipts from subscribing institutions and fees Were 

 $8,325 as compared with $7,300 in 1914, $6,160 in 1913 and $5,y 75 

 in 1912. The Supply Department has also shown an encouraging 

 increase, having filled 282 more orders than in 1914 with total 

 paid receipts of $16,932.00 as compared with $14,003.35 in 1914. 



Three important additions to the property and equipment of 

 the Laboratory were made during the year: (i) The so-called 

 Bake House property adjoining the Laboratory property on the 

 east was purchased; this piece has about 103 feet frontage on the 

 Eel pond and on the main street by 100 feet in depth, and its 

 title carries with it the private roadway previously controlled 

 jointly by the Laboratory and the owners of this property. The 



