REPOKT OF THE SECKETAKV. 9 



which c-ity he was at that time engineer in chief, liaxc been continued 

 in Italy, where l)y means of an ingenious apparatus he has prosecuted 

 a research which has been reported upon in detail, with illustrations 

 accompanied by tables giving the numerical results attained. After 

 compliance with the request of the Institution in regard to submitting 

 his I'eport, a second moderate grant was approved on bcdialf of Mr. 

 Canovetti in March of this year. A report of the results of the 

 experiments under this second grant is now awaited. 



Dr. von Lendenfeld. of the University of Prague, who has been 

 aided l)v a grant from the Hodgkins fund, icports that his studies are 

 now sufticiently advanced to enabl(> him to )>egin the pre})aration of 

 his manuscript for publication. 'l\dephotography has been extensively 

 and successfully us(h1 in this research, and tlic summary of work 

 alrmidy submitted is accompanied l)y inter(^sting illustrations. 



A monograph embodying the results of th(^ completed research, 

 which will be published later, Avill present an anatomical and physio- 

 logical study of insects, the lowei' vertebrates (Kxoca'tus, Draco, 

 etc.), birds, manunals (Petaurus, Geleopithecus. eti-.), and will treat 

 of the polj^genetic development of the organs of flight in animals. 

 The physical i)roperties of the air. wind velocities, resistance, etc., 

 will be considered, and it is hoped that the publication will not only 

 prove of general interest l)ut will become a valuable work of reference 

 for students. 



Di'. jNhirey, of the French Institute, mentioned in my last report as 

 having been awarded a grant from the Hodgkins fund, is still contin- 

 uing his most interesting experiments. The a})])licati()n of metro- 

 photography and chronoi)hotography to this investigation has been 

 described by Dr. jVhirey in a paper of such general value that it was 

 puldished in the appendix to the report of the Secretary for 1!H»1. In 

 this edition of the paper are included copies of special and interesting- 

 photographs which have been forwarded to the Institution by Dr. 

 Marey. 



The research into the nature of vowels by Prof. Louis Bevier. of 

 Rutgers College, has been reported on through a series of pul)lished 

 articles, transmitted l)y the author to the Institution, which record 

 in detail the results thus far o])tained. 'i'he imestigation is still in 

 progress, the vowel sei'ies from a to u IxMug now under analysis and 

 discussion. 



During this year a grant has been approved on behalf of Mr. E. C 

 Hufl'aker for the construction and practical aj)i)lication of a device 

 intended to produce a unifoi-m and measured How of aii' through a 

 tube of an}' desired diameter. 



This apparatus is primarily designed foi' use in connection with 

 investigations in the line of biology, and it has already been applied 



