264 THE MICROSCOPICAL NEWS. 
A STANDARD SIZE OF BODY TUBE. 
S we wish all microscopists to notice the various sizes of body 
tubes in the market we shall continue to insert the following 
table for several more numbers :— 
Diameter of Ocular. 
Name of Vendor or 
Description of Model. Body. | Neck. 
Maker. eS SS 
inches & 64ths | inches & 64ths 
Powell & Lealand..| Large Stand......... 1°233-64 | 58-64 
oe], Becks... National” 425..ceer 1°I7-64 57-64 
Smith & Beck...... Large stand <-2;.2.% 1°17-64 56-64 
oss ke CG. 265.25. | Ross-Jackson ...... 120-64 57-64 
WE = ese ces Ross-Zentmayer ...| 1°20-64 57-64 
NDANCEL. ss oes cece Large stand......... 1°17-64 57-64 
Brownihg |5-.0..22.-, Ordinary stand ..... I‘17-64 54-64 
RIOR oot ao cen Challenge) <. -.250a 1°13-64 56-64 
ECL eee et So Parley |.c < os seer one 1°17-64 
REEOMER 22.0 eke se PREMMCE {26 -e see 1'14-64 54-64 
PAWAWALEG 5 2:5 tas A Working 2. n0c0350 1°23-64 56-64 
PAT ICGS pos ceee net: SHMGEHIA (7. oe 1° 7-64 ie 
PETE cle si RSS < Ordinary’... 23252. 58-64 - 
JET Ae ee a Diite' 4: 2. ae 59-64 * 
Bopelbert 2. .0. a | Pitas, mo} sect 16-64 = 
Upon those stands marked with an asterisk the camera-lucida 
is not made to fit in the ordinary way. 
NOTES AND QUERIES. 
Att Notes and Queries should be sent to Mr. George E. Davis, 
The Willows, Fallowfield, Manchester, before the 16th of 
each month. 
CHOLERA.—A grant of £2,000 has been awarded to M. Pasteur 
by the French Chambers, to be employed in fitting out a scientific 
expedition to Egypt to study the cholera. M. Pasteur, it appears, 
will not accompany the expedition, which will consist of Drs. Roux, 
Thuillier, Strauz, and Nocard. M. Pasteur, it is almost unneces- 
