scammon: recording embryological material. 189 



Each of these main heads is subdivided. For the last and 



largest division, Barker's "Anatomical Terminology " (BNA ) 



has been made use of as a general guide, although most of 



the minor headings have been omitted and the names of the 



more distinct embryonic structures have been interpolated 



where it seemed necessary. Thus the headings under heart 



(Cor) , for example, are : 



COR. 



Epicardium. 

 Myocardium. 

 Endocardium. 

 Sinus veinosus. 

 Atria. 

 Ventricula. 

 Buibus arteriosus. 

 Conus arteriosus. 



Any other logical morphological classification would do as 

 well. In order to classify the records according to the groups 

 of animals, as well as the structures they represent, small 

 celluloid riders which fasten on the upper edge of the card 

 may be used, these riders to be of different colors — a color 

 having been selected to represent each class of vertebrates ; 

 for example, red for Pisces and blue for Batrachia. It is only 

 necessary to attach the properly tinted celluloid rider to each 

 information card and an easy system of cross-indexing of 

 notes is established. 



When embryos are photographed, the plates are placed in 

 envelopes bearing the photographic data and the number of 

 the embryo. A specimen photograph is placed in a large 

 scrap-book and the number and page are recorded on the 

 original data card of the specimen. 



Department of Zoology, 



University of Kansas, 



December 20, 1906. 



2-Univ. Sci. Bull., Vol. IV, No. 5. 



