352 J. J. Woodward on Nobert’s Test-plate. 
ART. XXXIV. —Remarks on the oe “a , 
Nobert ; by J. J. U8 Aone Asst. Surgeon, st 
Lieutenant-Colonel U. 8. Arm j 
THE Jan number of this Journal for 1861 contains an 
interesting article on the te test-plate of Nobert, by 
W.S. Sullivant and T. G. Worml 4 
In this test-plate the lines of the “first band are ruled ;;;th, 
those of the thirtieth band the ;,',;th of a Paris line apart, 
measuring from the center of one line to that of the next. 
Sullivant and Wormley resolved the first twenty-six of thee — 
bands, partly resolved the pean rete but failed to resolve 
nineteenth band Weing the ;;);5,;th of a Paris line a | 
In this new plate the fifteenth band corresponds precisely 
with the last band of the erokiaene plate, the lines ei 
the ;;';;th of a Paris line apar 
On one of these new plates Max Schultze * has snoceeded 
resolving the fourteenth band, Eulenstein of Stutgard 
done the same, and Nobert himself has gone no further,t | 
so far as I know, has any other European micr roscopist. Basta 
Under these circumstances, Mr. Charles Stodder of Bost! 
tells us that he and Mr. Greenleaf ‘‘saw the nineteenth sgl, 
satisfactorily” with a Tolles’ }th immersion of 170° amg 
magnifying 550 diameters. 
They did not count the lines, an operation which Mr. Btod- 
ef 
myself, nae also seen lines which I to rein 
what I saw, that these were ae wpcotaal or spurious, al Stoddet 
es, | am quite convinced that those which wie chat 
and Greenleaf have seen are of the same nature, and AH nine 
— will attempt to count the lines they see ip gill 
Archiv fir mikroskopische Anatomie. Bonn, sig Ay Peary bten His ~Geupne 
“Bl cen gs Licht bin ich mit den besten systemen bi 
Charles Sroile 
"+ Se See qu otations from a letter of Eulenstein in the paper of a 
hereafter quoted. vol. 
Nobert’s test-plate and modern microscopes, America 
p. 97, also Microscopical Journal, July, 1868, p. 131. To the Ia 
i i claims that Dr. Barn: 
lines in the nineteenth band. I am quite sure the hnes Dr 
~ age ones, and he himself writes me that his — in 
matured, and that he intends to make further 
