xliv 



LIST OF CONTRIBUTORS. 



HOOGEWERFF, S.,Pn. D., Rotterdam, 



5,8. 

 HUIZINGA, PROF., Director of the 



Physiological Laboratory, Univer- 

 sity of Groningen, 18. 

 MEES, PROF. R. A., Director of the 



Physical Laboratory, University of 



Groningen, 5, 6, 1O, 12. 

 MULDER, DR. M. E., Groningen, 18. 

 OTTMANS, H., 141, Amstel Hooge 



Sluis, Amsterdam, 18. 

 OUDEMANS, PROF. A. C., Royal 



Polytechnic School, Delft, 13. 

 ROYAL POLYTECHNIC SCHOOL (Prof. 



J. Bosscha) Delft, 10, 13, 17, 18. 

 RUKE, PROF. DR. P. L., Director of 



the Cabinet of Physics, University 



of Leyden, 3, 4, 6, 7, 8, 1O, 11, 



12, 18. 

 SCHOOL, SECONDARY GOVERNMENT, 



As sen, 3, 8. 

 SCIENTIFIC SOCIETY OP ZEELAND 



(G. N. de Stoppelaar, Sec.), Mid- 



delburgh, 18. 



SNELLEN, DR., Physiological Labora- 

 tory and Ophthalmological School, 

 Utrecht, 7, 15, 18. 



SNYDERS, J. A., Lecturer, Royal 

 Polytechnic School, Delft, 5, 18. 



SURINGAR, W. F. R., Professor of 

 Botany, University of Leyden, and 

 Director of the Royal Botanic Gar- 

 dens and Royal Herbarium, 18. 



TEYLER FOUNDATION, THE, Haarlem, 

 7, 9, 10, 11, 21. 



VAN ANKUM, PROF. U. J '., Zoological 

 Laboratory, University of Gronin- 

 gen, 18. 



VAN DE SANDE BAKHUYZEN, H. G., 

 Director of the Observatory, Ley- 

 den, 11. 



VAN RIJN, H. B. J., Venlo, 13. 



VERHAAR, A. T., Prosector, Veterin- 

 ary School, Utrecht, 18. 



ZEELAND, SCIENTIFIC SOCIETY OF 

 (G. N. de Stoppelaar, Secretary), 

 Middelburgh, 18. 



ITALY. 



ALBINI, PROF. G., Director of the 

 Physiological Institute, Royal Uni- 

 versity of Naples, 18. 



BLASERNA, PROF., Director of the 

 Institute of Physical Science, Royal 

 University of Rome, 2O. 



CACCIATORE, PROF. G., Director of 

 the Royal University, Palermo, 2O. 



CANTONI, PROF. G., Director of the 

 Institute of Physical Science, Uni- 

 versity of Pavia, 2O. 



CECCHI, PROF. F., L. Pelli fr Co., 

 12, Viale Militare, Florence, 2O. 



COLLEGIO ROMANO (OBSERVATORY), 

 Rome, 2O. 



COMO, LlCEO VOLTA, 2O. 



FELICI, R., Director of the Univer- 

 sity of Pisa, 2O. 



FLORENCE, ROYAL INSTITUTE "DI 

 STUDII SUPERIORI " (Sig. Peruzzi, 

 President), 1O, 11, 18, 2O. 



GAMBARA, PROF. G., Liceo Volta, 

 Como, 20. 



GIORDANO, PROF. G., Director of 

 the Cabinet of Physical Science, 

 University of Naples, 2O. 



LEGNAZZI, PROF., Royal University, 

 Padua, 2O. 



LICEO VOLTA, COMO, CABINET OF 

 PHYSIC AND CHEMISTRY (Prof. 

 G. Gambara), 2O. 



MODENA, ROYAL UNIVERSITY (OB- 

 SERVATORY), 2O. 



Mossi, DR. A., Director of the Uni- 

 versity, Turin, 2O. 



NAPLES, ROYAL UNIVERSITY OF, 2O. 



NAPLES, VESUVIAN AND METEORO- 

 LOGICAL OBSERVATORY, 2O. 



OBSERVATORY OF THE ROYAL UNI- 

 VERSITY (Prof. D. Ragona, Di- 

 rector), Modena, 2O. 



OBSERVATORY, ROYAL, Palermo, 2O. 



OBSERVATORY, COLLEGIO ROMANO, 

 (Padre Secchi, Director), Rome, 

 20. 



OBSERVATORY, ROYAL, OF THE 

 CAMPIDOGLIO, Rome, 2O. 



PADUA, ROYAL UNIVERSITY OF, 2O. 



PALERMO, ROYAL OBSERVATORY, 

 20. 



PALMIERI, PROF., Director of the 

 Vesuvian and Meteorological Ob- 

 servatory, Naples, 2O. 



PAVIA, UNIVERSITY OF, 2O. 



PELLI, L., 12, Viale Military Flo- 

 rence, 2O. 



