xxii Trans. Acad. ScL of St. Louis. 



ceiebro-spinal system of an unborn child of the patient was 

 likewise found to be infected by the germ, — from which, in 

 fact, the specimens exhibited were derived. 



Mr. H. von Schrenk presented the general results of a 

 study of certain diseases of the yellow pine, illustrating his 

 remarks l^y the exhibition of a large number of specimens 

 showing the characteristic phenomena of the diseases, and 

 the fruiting bodies of the funei which cause them. 



May 15, 1899. 



President Engler in the chair, thirty-one persons present. 



A paper by Professor F. E. Nipher on temperatures of 

 gaseous nebulae, was presented by title. 



Professor Edward M. Shepard exhibited an interesting 

 series of lantern slides and specimens procured by him dur- 

 ing a recent extended trip through the islands of the South 

 Pacific, especially New Zealand, Fiji and Samoa, illustrating 

 the natural history and ethnology of those islands. 



Two persons were proposed for active membership. 



June 5, 1899. 



President Engler in the chair, twenty-two persons present 



Dr. Enno Sander presented to the library of the Academy 

 a volume entitled Bibliographic de I'Anarchie, by M. Nettlau. 



A paper by Mr. Charles Thom, entitled The process of 

 fertilization in Aspidium and Adiantum, was presented by 

 title. 



Mr. J. B. S. Norton spoke of some trees of Crataegus 

 found near East St. Louis, Illinois, which are supposed to be 

 hybrids of Crataegus Crus-galli and C. viridis. The trees 

 have many characters common to both species. They occur 

 intimately associated Avith the supposed parents, and have a 

 comparatively local range. As opposed to the view that 

 they are h3'brids are the constancy of the characters, relative 

 abundance of seed, and the presence of a large number of 

 individuals. 



Mr. H. von Schrenk gave a brief description of some pecu- 



