48 INSTITUTE NOTES. 



The Curators of the Institute have been considering the 

 advisability of installing a hot water system of heating in the 

 Hall. The present system is not entirely satisfactory and if 

 some such improvement could be made it would be acceptable. 



Albert S. Barker reports the finding of Spirogyra in con- 

 jugation on August 19th, 1909. This is an unusual time of 

 year for this process to occur, at least in this locality. In the 

 present case three filaments were concerned in the process, the 

 spore formation occurring, however, in only the two outside 

 filaments. 



C. M. Broomall reports a weir measurement of the flow of 

 Ridley Creek, above the Media water works dam, on Septem- 

 ber ist, 1909, of 3,950,000 gallons per day. Considering the 

 very small rainfall of this year this may be considered as 

 about the minimum flow of Ridley Creek. 



The work of labeling the trees in the Court House Square, 

 Media, with proper common and scientific names, has been 

 completed. At the instance of Judge William B. Broomall, 

 the County Commissioners were induced to supply the neces- 

 sary signs, in the shape of neat, little metal plates, appropri- 

 ately marked. The naming was done by the botanists of the 

 Institute, after consultation with horticultural specialists. 



ERRATA : 



Page 15, line i — For "guage" read "gauge." 

 Page 37, line 3 — For " indusputably " read "indisputably." 

 Page 38, line 27 — For " shift or accent " read "shift of accent. 

 Page 40, lines 8 and 18 — For "chaffeur" read "chauffeur." 



