484 Scientific Intelligence. 



Charlks H. Peck: Edible and poisonous Fungi. 

 Edward S. Morse: A new process of printing in color. 



J. McKeen Cattell and Charles S. Dolley: On Reaction — times and the 

 velocity of the nervous impulse. 



3. Annalen der Physik und Chemie, published in Leipzig since 

 3790 by Johann Ambrosius Barth (now Arthur Meiner). — This 

 long honored periodical has now completed more than a century. 

 It was begun by Gren in 1790, continued till 1824 by Gilbert, 

 again till 1877 by Poggendorff and is now edited by Prof. G. 

 Wiedemann. The first number of the 50th volume is devoted to 

 the present editor, a biographical sketch of whom is given by 

 Prof. Helmholtz ; an excellent portrait forms the frontispiece. 



Die Photographie : oder die Anfestigung von bildlichen Darstellungen auf 

 kiinstlichen Wege. Lehr- u. Handbuch von praktischen und theoretischer Seite; 

 bearbeitet und herausgegeben von Julius Kriiger: zweite Auflage, ganzlich neu 

 bearbeitet von Ph. C. J. Husnik, 494, L2mo. Wien, Pest, Leipzig (A. Hartleben). 



Obit 



UARY. 



Arcangelo Scacchi, the veteran mineralogist of Naples, 

 whose long continued labors on the mineralogy and geology of 

 Monte Somma and Vesuvius, have given such rich results to 

 science, died on the 11th of October. 



Hermann August Hagen, the well known entomologist, and 

 since 1870, Professor of Entomology at Harvard University, died 

 on the 10th of November. He was born at Konigsberg, Prussia, 

 in 1817 and his scientific work for many years was done there. 

 In 1867, at the invitation of Professor Agassiz, he came to this 

 country to take a position in connection with the Cambridge 

 Museum of Comparative Zoology. Among his many important 

 contributions to science, the most extended is his Bibliotheca 

 Entomologica, published in 1802. 



Dr, Georgk W. Coakley, emeritus professor of mathematics 

 and astronomy in the University of the City of New York, died 

 at his home in Brooklyn on the 2d of August, in the seventy- 

 ninth year of his age. He came to this country from the West 

 Indies during his boyhood, and was graduated with honor from 

 Rutgers College in New Jersey. After some years of work as a 

 teacher of mathematics, first in New York State and afterward 

 in Maryland, he was called to New York City about 1860, to 

 assume the chair made vacant by the withdrawal of Professor 

 Elias Loomis, who had just changed his residence from New 

 York to New Haven. Professor Coakley continued his work 

 here for thirty years. As a teacher he was indefatigable, patient, 

 and skillful. In personal disposition he was too modest and 

 retiring to secure lor himself all the recognition that was due him. 

 During the latter years of his life he published a number of papers 

 On astronomical subjects, and his last work was a text-book on 

 Calculus, which has not yet been published. During a protracted 

 illness his interest in astronomical progress never flagged, and his 

 clearest and best writing was done after disease had unfitted him 

 for active work. w\ Lee. s. 



