1899.] NATURAL SCIENCES OF PHILADELPHIA. 547 



and Stewardson Brown, a number of North American plants 

 from Mr. William M. Canby, and one hundred and fifty California 

 plants from Miss Anna C. Hartshorne. 



Were more time at the Conservator's disposal it would be an 

 easy matter to materially increase the herbarium as well as library 

 througli the medium of exchanges as is done in other institutions, 

 and it is to be hoj)ed that some arrangement may be efiected in the 

 near future that will make this possible. 



The Conservator wishes to express his thanks to the membei's of 

 the Section in general and to Messrs. Thomas Meehan and Uselma 

 C. Smith in particular for the valuable assistance rendered during 

 the year. 



Respectfully submitted, 



Stewardson Brown, 



Conservator. 



REPORT OF THE MINERALOGICAL AND GEOLOG- 

 ICAL SECTION. 



The Director of the Mineralogical and Geological Section would 

 respectfully report that nine meetings of the Section have been 

 held during the year, with a marked increase of interest and of 

 value in the communications. 



The Section is especially indebted to Dr. Florence Bascom, of 

 Bryn Mawr College, who gave a lecture on the minerals of rock 

 sections, illustrated by excellent slides shown by electric light, 

 through the courtesy of the Franklin Institute, at its hall, the 

 polariscope being furnished without charge by Messrs. Queen & Co. 



Two interesting and largely attended excursions were made, one 

 to Doylestown, Buckingham Mountain, and New Hope, the other 

 to Bridgeport, Henderson Station and Port Kennedy. 



Additions to the museum have been less than usual. It is wor- 

 thy of consideration whether this may not be due to the fact that 

 a large part of the collection formerly displayed is now .where it 

 cannot readily be seen. It is hoped that when means can be 

 secured for the better display a greater interest may be developed. 



