AN IMA TED PICT URES. 



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An Approaching Train. 

 Compare upper and lower views 

 of the film. 



This graphic method should theoretic- 

 ally be applicable to insects and animals as 

 well. as to plants. In practice, however, it 

 can be successfully applied only to the 

 lower and the higher forms of animal life. 

 On the one hand, we could picture the 

 growth of certain lowly organisms in the 

 border land between the animal and vege- 

 table worlds; on the other, we could por- 

 tray the development of a child, or even the 

 life changes of a human being from child- 

 hood to old age. Pictures of the latter 

 class may evidently be taken at daily inter- 

 vals; uniformity in position and expression, 

 as well as in the clothing or drapery of the 

 subject, being essential requisites to success 

 in all such cases. 



In dealing with subjects of this nature 

 we must take into account the inevitable 

 deterioration of the sensitive films through 

 lapse of time. It will become necessary, in 

 fact, to use shorter films whenever the nega- 

 tive series is much prolonged. Such films 

 could be treated separately, and afterward 

 joined together so as to form one long strip 

 — a procedure involving only the exercise of 

 a little care and the use of some celluloid 

 solution. From this composite negative 

 film a single uniform roll of pictures would 

 ultimately be obtained by the usual process. 



The application of this method to out- 

 door objects will in general be greatly re- 

 stricted, owing in part to the variable light 

 and partly also to the influence of wind and 

 weather. Some picturesque effects could, 

 however, be obtained by photographing 

 natural scenery under varying angles of 

 solar illumination — especially in mountain- 

 ous regions and near the time of sunrise or 

 sunset, when the luost striking changes 

 would be manifested. Seasonal variations, 

 too, might be illustrated by depicting scen- 

 ery in a forest from day to day for months in 

 succession. Owing to the gradual nature of 



