NATURAL SCIENCES OF PHILADELPHIA. 13 



Sej^f. m, 1869. 

 Director, S. W. Mitchell, M.D., in the Chair. 



Nineteen members present. 



The Director, for the committee appointed at last meeting on Dr. 

 Keen's paper, reported that they had asked Dr. Keen to make some 

 further experiment?. 



Dr. Keen read a supplement to his paper, in compliance %Yith this 

 recommendation. 



Dr. Tyson read a paper entitled, " a Note on the Distribution of 

 Nerves to the Vessels in the Connective Tissue of the Pig's Kidney." 

 See Amer. Jour. Med. Sci., Oct., 1869. 



Dr. W. Pepper exhibited some slides of muscular fibre removed, 

 post-mortem, from an emigrant girl, who died of typhoid fever. 



The patient was a German girl, aet. 22, who had been in America but six 

 weeks. There bad been six deaths from fever on board the emigrant ship in 

 which she came to this country. She died on the nineteenth day. 



Besides the ordinary lesions of the disease, the muscular tissue of both ven- 

 tricles of the heart presented a marked degree of friability, and, on microsco- 

 pic examination, was found to have undergone quite advanced granular de- 

 generation, as originally observed by Zenker. 



The psoas and external oblique muscles of the right side were also examined, 

 but were found healthy. 



Dh. Howell made some remarks on the application of photography to 

 microscopy. He spoke of the inexpensiveness of the apparatus necessary to 

 the work, and exhibited the results of his experiments with sunlight, and also 

 the magnesium light, as applied to micro-photography. The positive prints 

 were from photographs of sections of teeth, bone, cartilage, coal, &c. 



Dr. H. Allen made some remarks upon the peculiarities in the construction 

 of inter-orbital space of the human skull. He demonstrated by outlines upon 

 the blackboard that these peculiarities may consist of the following plans: 



(1.) Absence of nasal bones with vertical plate of ethmoid appearing be- 

 tween the nasal processes of the superior maxillae. 



(2.) Absence of left nasal bone, its area being occupied by the nasal process 

 of the corresponding side. 



(3.) Same as (1), with rudiments of nasal bones in position. 



(4.) Ossification of inter-nasal septum. 



Reference was made to Dr. Van der Hcjeven's paper on this subject in Siebold 

 and Kolliker Zeitschrift. 



Sept. 20th, 1869. 



Vice-Director, W. Pepper, M.D., in the Chair. 



Twenty-two members present. 



Dr, J. G. Richardson exhibited specimens of Sarcina ventriculi 

 found in the vomited matter of a patient. 



He remarked that his observations tended to show that the divisions of the 

 Sarcina which were formerly figured by some as having central nuclei, are 

 now seen, under a higher power, to be divided into four parts, the junctions 

 of their separating fissures being apparently mistaken for their nuclei. 



Dr. Wm. Pepper desired to place on record the following observa- 

 tions : 



