r 
XXXVUl GIBBS. 
ruary 27, 1909, and later published in the Philippine Journal 
of Science, is an inspiration to all workers in science. His edito- 
rial work was most conscientiously performed and I have known 
him to read many articles three times before the final appearance 
in print. During the last four years of his life, he developed the 
keenest interest in the studies of sunlight and sunlight reactions 
carried on in the Bureau of Science, and through his wide acquain- 
tance and scientific reputation, he obtained the cooperation of 
various colleagues in America, Europe, Africa, Asia, Australia, 
and some of the most important islands outside of the Phil- 
ippine Archipelago. This work was beginning to bear fruit at 
the time of his death, and he had already published two articles 
summarizing the results. It promises to throw much light upon 
several mooted questions concerning sunlight and its effects 
upon man, and in a few years would have resulted, I believe, in 
such an indisputable mass of valuable evidence that Doctor 
Freer and his friends would have regarded it as his crowning 
achievement. 
LIST OF PUBLICATIONS. 
Ueber den Acetyltrimethylencarbonsaureather, by W. H. Perkin, jr., and 
P. C. Freer. Ber. d. deutschen ckem, Ges. (1886), 19, 2561-2569. 
The synthetical formation of closed carbon-chains. Part I (continued). 
The action of ethylene bromide on the sodium-derivatives of ethylic 
acetoacetate, benzoyl-acetate, and acetone-dicarboxylate, by Paul C. 
Freer and W. H. Perkin, jr. Trans. Joum. Chem. Soc. (1887), 51. 
820-853, 
On the action of ethylene bromide on the sodium derivatives of the ethers 
of acetoacetic, benzoyl- acetic and acetone-dicarboxylic acids, by Paul 
C. Freer and W. H. Perkin, jr. Am. Chem. Joum. (1888), 40. 
446-457. 
Synthese von Hexamethylenderivaten, by Paul C. Freer and W. H. Perkin, 
jr. Ber. d. deutschen chem. Ges. (1888), 12, 735-737. 
The synthetical formation of closed carbon-chains. Part IV. Some deri- 
vatives of hexamethylene, by Paul C. Freer and W. H. Perkin, jr. 
Trans. Joum. Chem. Soc. (1888), 53, 202-215. 
The synthetical formation of closed carbon -chains. Part V. Experiments 
on the synthesis of heptamethylene derivatives, by Paul C. Freer and 
W. H. Perkin, jr. Trans. Joum. Chem. Soc. (1888), 53, 215-222. 
Zur Kenntniss des Heptamethylenringes, by Paul C. Freer and W. H. 
Perkin, jr. Ber. d. deutschen chem. Gee. (1888), 21, 738-739. 
Uber die Einwirkung von Jodwasserstoffsaure auf die Krotonsauren, by 
Arthur Michael and Paul C. Freer. Joum. f. prak. Chem. (1889), 
40, 95-96. 
The action of sodium on acetone. Am. Chem. Joum. MRSn^. 12. .^.^.f^.^fi?. 
