290 CARNEGIE INSTITUTION OF WASHINGTON. 



EMBRYOLOGICAL RESEARCH. 



Mall, Franklin P., Johns Hopkins University, Baltimore, Mel. Grant 

 No. 874, allotted Feb. 20, 1913. Emhryological research. $15,000 



The grant for embryological research was made available upon 

 March 21, 1913, and steps were taken at once to inaugurate the work. 

 I was then appointed Research Associate; Miss Rebecca D. Hepburn, 

 private secretary; Dr. Herbert M. Evans, Research Associate, on June 

 1 ; Mr. James F. Didusch, artist, on September 1 ; and Miss Char- 

 lotte W. Wilson, technical assistant, on September 15. 



Work was begun at once to make a catalogue of my collection of 

 human embryos. The many histories, notes, drawings, photographs, 

 specimens, and serial sections are now being recorded uniformly in 

 books which have been printed for this purpose. The catalogue should 

 be completed during the calendar year. The more valuable specimens 

 and all of the records are now being filed after a system in fire-proof 

 safes especially constructed to receive them. 



A vigorous campaign has been carried on for new specimens of 

 human embryos, through correspondence and through the distribu- 

 tion of circulars and reports. These notices have reached more than 

 half of the physicians of the United States. At the suggestion of the 

 late Dr. Billings, many letters have been sent to the Orient, and the 

 first replies received indicate that they will bring interesting and 

 valuable information. The result of these efforts has been most sat- 

 isfactory. Within six months about 150 specimens, mostly young 

 ones, have been added to the collection, many of which are of great 

 value and some are unique. Formerly it took three to five years to 

 collect this number of embryos. The histories which accompany 

 these specimens are much better than the older ones, special pains 

 having been taken to secure them. 



The work is being carried on in a number of rooms in the Anatom- 

 ical Laboratory of the Johns Hopkins University, and its facilities for 

 embryological investigation, which are unusually good, are also being 

 used. Three fire-proof rooms in the new Phipps Psychiatric Clinic 

 have been generously placed at our disposal by Dr. Adolf Meyer, 

 director of the clinic, and Superintendent Smith, of the Johns Hopkins 

 Hospital. In these rooms the better part of the collection is now 

 safely housed. 



During the spring a number of human embryos, mostly in serial 

 sections, have been loaned for study to Professor Edward Fawcett, of 

 Bristol, England; Professor J. M. Fhnt, of Yale; Professor Thomas S. 

 Cullen, of the Johns Hopkins Hospital; Dr. J. L. Bremer, of Harvard ; 

 Professor George B. Jenkins, of Louisville, and Dr. Ernest Cullen, of 

 Detroit. Aid has also been rendered in completing or in preparing 

 for press the following investigations : A monograph by Dr. Lewis H. 



