sophical import. You many congratulate yourself on your in- 

 strumentality in spreading the news in America. 



Very sincerely, A. L. DANIELS, 



Professor of Mathematics, University of Vermont. 



STAUNTON. VA., October 13th, 1894. 



The history of the life and work of such a man as Lobachevski 

 will be a grand inspiration to mathematicians, especially with 

 such a leader as yourself, in the important field of non-Euclidean 

 Geometry. Very truly yours. G. B. M. ZERR. 



BETHLEHEM. PA.. October 22nd, 1894. 



I have read the Lobachevski with much pleasure and what is 

 better profit. Yours very truly. G. L. DOOLITTLE, 



Professor of Mathematics in the University of Pennsj'lvania. 



HALLE a. S., LAFONTAINESTR., 2; 23,10, '94. 

 Hochgeehrter Herr: 



Auf der Naturforscherversamrnlung in Wien lernte ich Prof. 

 Wasilief ans Kas;ln kennen, der mir erzaehlte. das Sie seine Kede 

 bei der Lobatschefsky-Feier uebersetzen wollten. Diese Xach- 

 richt war mich sehr willkommen. da die russische mir unver- 

 standlich ist. 



Nun erhalte ich heute von Ihnen diese Uebersetzungzugesandt 

 und sage Ihnen dafuer meinen verbindlichsten Dank. Sie haben 

 mit der Uebersetzung dieser interessauten Rede sich den Ans- 

 pruch auf den Dank der mathematischen Welt erworben ! 



Hochachtungsvoll Ihr ergebener, STAECKEL. 



STANFORD UNIVERSITY, 

 PALO ALTO, CAL., October 19th, 1894. 



1 have read the Lobachevski with the greatest interest, and re- 

 joice that you. "in the midst of the virgin forests of Texas." are 

 able to do this work. And. by the way, I have heard at different 

 times a number of professors speak of your Geometry (Elements). 

 All who have examined it. and whom I have heard speak of it, 

 seem to think it the best Geometry we have. 



Yours truly. A. P. CARMAN, 



Professor of Physics, Leland Stanford. Jr.. University. 



