Monthly Microscopical 
Journal, July 1, 1870. ( 51 ) 
PROCHEDINGS OF SOCIETIES.* 
Royaut MicroscopicaAL Society. 
Kine’s CoLuece, June 8, 1870. 
Rev. J. B. Reade, M.A., F.R.S., President, in the chair. 
The minutes of the last meeting were read and confirmed. 
A list of donations to the Society was read, which included Part 2, 
vol. clix. of the ‘ Philosophical Transactions’ from the President. 
The usual vote of thanks was given to the respective donors. 
Mr. Hogg stated that he had received a letter from Dr. Maddox, 
enclosing six photographs of L. curvicollis, most of which gave decided 
indications of beaded structure. As the letter contained points of 
interest it is given in extenso :— 
Woo.stonE, SourHAMP'rON, June 7, 1870. 
My pear Sir,—I hasten to send you a few prints by this evening’s 
post (although very imperfect), to be in time for your to-morrow’s 
meeting; but to get them ready they have been hurriedly printed on 
some old paper, as I had not time to obtain others; they appear 
discoloured. Moreover, you must look on them as only abortive 
attempts to see the real Podura scale under its various phases,—more 
especially searching for the beaded structure. 
The negatives are all from the same scale, which is on a slide given 
me by my much-respected friend, the late Richard Beck, therefore the 
genuine kind; unfortunately the slide is now much overrun by mycelium 
threads, and one crosses the best part of this scale, that is, the part 
lying close to the cover, but beneath it on the surface of the slide. 
I have used for the photograph marked A, Wales’ } and achromatic 
concave with a 54, achromatic condenser, and my malin 
usual solar microscopic mirror, large and small 
condensers with a plate of ground glass inter- 
posed at the focus of the collecting lens. For 
B and C the same, with a double plano-convex 
condenser 11 inch in diameter, with a stop over 
the top lens of the shape Fig. 1, and the small 
lens of the solar condenser removed. For D 
the same as B and OC, substituting a Nachet’s 
small prism of 30° angle, and replacing the small solar condensing 
lens. For E and F the 54, achromatic condenser with the large and 
small solar lenses, and a 7th made by myself—after Mr. Wenham’s 
published formula—with an achromatic concave. The weather was 
* Secretaries of Societies will greatly oblige us by writing their reports legibly 
—especially by printing the technical terms thus; H y dra—and by “underlining ” 
words, such as specific names, which must be printed in italics. They will thus 
secure accuracy and enhance the value of their proceedings.—Ep, M. M. J. 
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