Queries. 75 
of a substance analogous to urea and also uric acid in this organ. 
It would, therefore, appear to fulfil the same function as a kidney, 
but am quite unable to find the article, although I have carefully 
looked through the index. We G: 
Queries. 
All Questions and Answers should be clearly and concisely written on one side 
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published, in which case initials or other signature should appear in the usual place. 
When more than one question is sent by the same correspondent, each must be 
written on a separate piece of paper. 
Correspondents, in sending us answers to questions, are desired to commence 
by quoting the number and title of the question as printed, before beginning their 
reply. Atl answers should reach us before the rath of the month. 
350.—-Penicillium glaucum.—What is the easiest and best 
method of obtaining and mouNting for permanent specimens 
Lenicillium glaucum ? S. A. OLIVER. 
301.—Intestine.—Can anyone give me the method to show the 
villi of the intestine in an upright or vertical position, injected or 
otherwise, as Mr. Norman’s slides are done as opaque mounts ? 
LE: 
352.—Olfactory Mucous Membrane.—What is the usual 
method for preparing specimens of olfactory mucous membrane 
to illustrate all details? H, A. PARKER, 
303,—Ear, Human.—Will anyone oblige by giving direc- 
tions for beginners to prepare good specimens of the ear 
(internal) ? HA. BRIERLEY. 
304,—Objectives.—How is the focal length of microscopical 
objectives measured ? AMATEUR. 
355.—Starches.—What is the best medium for mounting 
starches ? Je D: 
356.—Labelling Histo. and Path. Cabinets.—What is the best 
and most convenient way to catalogue and arrange this class of 
specimens—by organs, as nervous system, respiratory, circulatory, 
etc. ; or alphabetically from organs, as liver, lung? I should be 
glad to hear in an early number. VID. 
357,—Phosphorescence.—Can anyone explain the cause of 
phosphorescence in fish? Is it due to micrococci? SCIENTIFIC. 
358.—Pollen.—What is the best method for cultivation of 
pollen spores ? Boranlic. 
359.—Thorax.—What is the best method for making a trans- 
verse section of foetal thorax, showing all the parts 77 setu ? 
Histo, 
