1 68 MINUTKS OK SEC'IMON A. 



of a kitten's tongue. T. Chalkley Palmer exhibited a slide 

 of Pinmdaria ; also a Navicula, stained to show the gelatin- 

 ous sheath ; also a Closterium burned on the cover glass to 

 show that the cellulose walls contain sufficient oxide of iron 

 to preserve the shape of the organism after the vegetable 

 matter has been destroyed. Albert S. Barker exhibited a pre- 

 paration of the stamen hairs of Tradescantia Virgin ica, show- 

 ing the streaming of the protoplasm ; also sections through 

 the conceptacles of Fucus. Mrs. Henry L. Broomall pre- 

 sented specimens of the Mexican jumping bean. Dr. Star- 

 buck spoke of an anaerobic organism found in the disease 

 known as Vincent's angina, and stated that there is also 

 found in this disease a motile spirillum bacillus. 



June id, 1909. — Carolus M. Broomall exhibited a section 

 of the wooden water pipe laid in Philadelphia in 1800, and 

 dug up during some recent construction work. He called 

 attention to the remarkable preservation of the wood. San- 

 ford Omensetter described the actions of a song sparrow in 

 attendance upon a young cowbird. Albert S. Barker exhi- 

 bited a living centipede, captured on South Orange Street, 

 just outside of Media, which was added to the permanent col- 

 lection of the Institute ; also the sporangia of certain ferns, 

 in which the process of scattering the spores was shown under 

 the microscope ; also a slide of blackberry rust ; also Utricu- 

 laria from the pond in the Botanic Garden, University of 

 Pennsylvania. C. M. Broomall exhibited an Indian axe 

 head having hvo grooves for the attachment of the handle. 



June 17, 1909. — Carolus M. Broomall exhibited a Zyg- 

 nema which had developed in water drawn in the Institute 

 building. Sanford Omensetter exhibited Baptisia tinctoria 

 and described the characteristics of the species. Albert S. 

 Barker exhibited living specimens of Pluinaiella and Hydra 

 vulgaris : also pollen of the hollyhock. 



June 24, h^ch). — C. Edgar Ogden exhibited maple leaves 



