Taylor.] ^t)0 [April 17, 



estimate of the whole cost of its publication should be furnished 

 to the Committee, 



Mr. J. Sergeant Price from the Committee on the Michaux 

 legacy, reported that the Michaux lectures would be delivered 

 as usual at the Horticultural Hall, in Fairmount Park, begin- 

 ing to-morrow, and presented the following synopsis of the 

 prepared course : 



Free lectures in Fairmount Park on Botany and Sylvicul- 

 ture, on Saturdays, at 4 o'clock. Prof. J. T. Eothrock will 

 deliver his usual course of lectures on Botany and Sylviculture, 

 in Horticultural Hall, on the following Saturdays, at 4 P. M. 



April 18. Our domestic foes, Bacteria, 



25. Our domestic foes. Bacteria. 

 May 2. Evolution in plants. 



9, Fate in forests. 



16. New facts in botany. 



23. Forests in civilization. 

 80. Plant freaks. 



Sept. 12. Famous trees. 



19. Unwelcome plants, 



26. Statistics of forestry, 

 Oct, 3, Forest Laws. 



10, Peculiar Woods, 



17. Our park, 



24. Food adulterations. 



The rough minutes were read, and the Society was adjourned 

 by the President. 



On Composite PhotograpJiy. By W. Curtis Taylor. 

 {Read before the American PMlosophical Society, April 17, 1SS5.) 



Composite Photography is the combination of the images of a number 

 of allied objects in such a manner as to produce one photographic impres. 

 sion embodying the effects of all. There are several ways of accomplish- 

 ing this, but the one to be described tonight is perhaps the simplest and 

 surest. 



By this process the common characteristics of every group of related 



