522 



SCIENCE 



[N. S. Vol. XL VI. No. 1196 



But t&ese university laboratories are 

 rarely able to concentrate on to the group 

 of problems which they are studying spe- 

 cialists from such different branches of 

 science as are available for similar labora- 

 tories outside the universities owing to the 

 fact that it is very difficult to obtain inter- 

 departmental cooperation in research in a 

 university. In a specialized laboratory, on 

 the other hand, workers in all branches of 



The purpose of this laboratory is the in- 

 vestigation of the scientific foundations of 

 photography and its applications, every- 

 thing relating to photography in all its 

 'branches and applications being of inter- 

 est. The branches of science which are of 

 chief importance in photographic problems 

 are those of optics in physics and of the col- 

 loidal, physical and organic branches of 

 chemistry, and the relations of these sci- 



6B3n£miaL opr/cs 



. oimms. Lgfixs 



P/iymS/FAPMY 



f AiiAr£uP PK>ras/ffv:fr>' 



'i'/ff^ C/AT/^T^S/PAP/r/ 



APPi^f/^i-S^/S^T/r/C PUO/SG/FAJP//Y 



coit:/? p//orja/PAPuy 



science may well collaborate in the investi- 

 gation of problems representing different 

 points of view of one general subject. 



In addition to the examples of industrial 

 and institutional laboratories mentioned 

 above I should like to illustrate the struc- 

 ture of a convergent laboratory, if I may be 

 forgiven for doing so. bv referring to the 

 organization of the research laboratory 

 with which I am connected — that of the 

 Jlastman Kodak Company. 



ences to photographic problems are shown 

 in graphic form in Fig. 1. 



Optics deals on its geometrical side with 

 the materials used in photography — cam- 

 eras, lenses, shutters, etc. — and on its phys- 

 ical side vdth such materials as color filters 

 and illuminants, but especially with the 

 study of the relation of the photographic 

 image to the light by means of which it was 

 produced — a study which is known by the 

 name of sensitometry. The manufacture 



