The Amateur Diatomist
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The Amateur Diatomist Volume 6 Part I. ● Editorial ● New Downloads ● Zero-Chemical Diatom Cleaning ● Heinr. Boecker's 1884 List ● Uses of Diatomite - Brewery Filters ● Juniper Hall Microscopists' Weekend - August 2013 ● Further Notes on Skye Deposits ● Alehouses for Diatomists ● Steve Edgar's Diatom Gallery ● Old Papers Revisited - On Diatoms by Thomas Partridge ● Field Microscopes XI ● My New Diatom Project (II) ● Some Notes on John Ralfs ● Professor Noidea's Diatom Column Didymosphenia by VAC ©2013 Steve Edgar Editorial This issue has a definite 'beery' flavour inasmuch as two articles reflect the editors other interest - namely ale. There's something comforting about sitting outside (or inside) a pub with a foaming glass of beer knowing that, in all likelihood, the crystal clear sparkling product owes its clarity to the diatom. file:///L|/Amateur%20Diatomist/AD%20Web%20Site/vol6pt1/vol6pt1sub.htm (1 of 102)15/10/2014 18:09:32 The Amateur Diatomist There are a number of new downloads available, updated 'Letters' and 'Links' sections and the addition of a 'News' page. As with all previous issues it takes us some time to accumulate sufficient material to warrant a new issue. If you have something you would like to offer in the way of articles, photographs or notes then please send such. Contact details can be found on the 'About' page. Go to Top of Page New Downloads Some further works by Horace Barber - a review by Mike Samworth The work in front of me on the computer screen is another download on 'The Amateur Diatomist website'. Perhaps some sort of explanation is needed here. Some may remember that this ‘title’ started life in March 2002 with the publication of Number 1 within Volume 1 of an A5, well printed publication of some 40 pages. Instigated, inspired and industriously worked on by Steve Gill, with the help of others, the stated aim was to further the interest and study if diatoms, as the title suggests amongst principally the amateur naturalist. Initially free, the publication costs eventually resulted in a subscription fee, which some eighty-odd people signed up to. After 16 issues in all, production costs meant that in July 2009, the last physical issue went out. However, the publication has continued to exist on the internet, which of course allowed colour photographs and an almost unlimited size per issue. To the credit of those concerned, the entire ‘back-catalogue’ of Volumes 1-4 is available as PDFs and an index allows some sort of search. Also on the website are a number of downloads of some publications that are quite varied. They range from a Diatom Glossary, to a scale utility program for use with measuring of microscopic objects. There is the mammoth tome 'An Introduction to the Microscopical Study of Diatoms’ by Robert B. McLaughlin which is a must for anyone with the slightest interest in diatoms, or microscopy in general for that matter, such is the scope of the work. There are four works celebrating the work of the late Horace Barber, and the subject of this review is the fourth and latest of them. Horace was a remarkable man in many respects, and his very personality lives on in the numerous drawings of diatoms that he made, many of which are only being seen here by the good grace and kindness of his son Alan Barber and the unstinting efforts of the Editor in making them available. The contents of this publication are something of a mixed bag. There are notes, illustrations and letters, most previously unpublished, that were found in Bernard file:///L|/Amateur%20Diatomist/AD%20Web%20Site/vol6pt1/vol6pt1sub.htm (2 of 102)15/10/2014 18:09:32 The Amateur Diatomist Hartley’s archive of correspondence with Horace Barber.We should be grateful to the late Bernard Hartley that he kept these safe, and made plans for them to pass to other interested parties. Unlike the previous volumes these ‘papers’ relate to a wide range of sites rather than a single region. There are notes on fossil material from Russia and the States as well as notes on collections made at British Diatomist meetings. Also of interest are Horace’s opinion on ‘splitters and lumpers’. The multiple introductions to his “British Diatom Flora” are historically important in that none of these made their way into the publication "An Atlas of British Diatoms" published after his death. I can only give a flavour here, but one or two things stand out. In 1982, the annual meeting of British Diatomists was held at The Leonard Wills Field Centre, Nettlecombe Court, Sussex. Attendance compised some forty-four persons including diatomists from overseas. During the weekend opportunity was taken to make a gathering of diatoms from a stretch of water known as Parsonage Pond, within the grounds. There is an illustrated account of the flora from filamentous algae. Also included is a photograph of the attendees, in which each has been named, quite a historical record in itself. There was also a meeting at another FSC field centre, in 1981, at Malham Tarn. During this weekend, Horace did quite a thorough survey of the diatom flora, and the was published in the Quekett journal. Horace didn’t consider himself an expert at identification, and ascribed one form as ‘Kudbeowtii’. In 2000, another group of microscopists found themselves at this very same fine location, and a number set about teaching others of the joys of collecting, cleaning, viewing etc. A short report of this was given in ‘The Amateur Diatomist’ Vol 1 No. 2 and a comparison table shown of the species found in 1981 and 2000. In a similar vein, one form was given as ‘Noidea’. For me, the most important aspect of this, and other works of Horace Barber, are the drawings themselves. Here, the originals have been cleaned up a little, to remove unnecessary annotations or marks, and they look absolutely splendid. They have an inimitable style that both sets them out as his, but at the same time gives a wonderful impression of the diatom. There are more detailed figures in many texts, but few can express the very soul (if it has one) of the diatom in question. Birdwatchers talk about the ‘jizz’ of a bird, and some illustrators have that skill of depiction and some don’t. In the case of birds, feather-perfect isn’t always best. Ennion, Tunnicliffe and Eade are names that keen birders would recognise as showing the personality of a bird, and to that we must add Barber for our favourite algae. It is somewhat easy to recommend a publication that doesn’t cost anything. However, this is a very worthwhile publication, and I recommend it to you. If nothing else you can marvel at the artistry of the man and his interest in such small things that most folk don’t know exist all around them. file:///L|/Amateur%20Diatomist/AD%20Web%20Site/vol6pt1/vol6pt1sub.htm (3 of 102)15/10/2014 18:09:32 The Amateur Diatomist The Letters of Samuel Henry Meakin to Charles Leslie Odam file:///L|/Amateur%20Diatomist/AD%20Web%20Site/vol6pt1/vol6pt1sub.htm (4 of 102)15/10/2014 18:09:32 The Amateur Diatomist A Diatomist's Vade Mecum by Cedric Norman Walter Go to Top of Page Cleaning Diatoms Zero-Chemical Diatom Cleaning Purpose: To clean living (or dead, or preserved) diatom material of all the cell contents without recourse to chemical cleaning of any description. Introduction: The method we are about to describe is known as 'Incineration'. This is, of course, not a new concept as it has been widely used in the distant and recent past by many diatomists. This extract from a letter to Klaus-Dieter Kemp from John Carter dated June 1987 amply confirms this: file:///L|/Amateur%20Diatomist/AD%20Web%20Site/vol6pt1/vol6pt1sub.htm (5 of 102)15/10/2014 18:09:32 The Amateur Diatomist Dear Klaus, Having returned from my annual jaunt to the frozen north (and it did actually snow this year) I am now once again on the job and you wull no doubt be interested in this one. You will know that Hustedt in 1930, and 1966 also, tells us that Nav. perpusilla as well as N. gallica grow in chains. I sent you a slide of the latter some time ago and I have been fortunate to find the former in a gathering near here. Of course it's not on the cards to clean the stuff as the chains would disintegrate so I made one or two incinerations and here is one for you to amuse yourself with. However, most descriptions of this incineration technique rely on the cleaner having access to Platinum (Pt) foil. No doubt there are those that would still be able to afford such a luxury (currently about £30 per gram) - the editors do not fall into this category. Apparatus: ● A Blow Torch - a normal household decorating Blow Torch is ideal. ● A Steel Plate ● A Laboratory Tripod or Clamp Stand ● A supply of 22x22mm coverslips (or larger) ● A supply of 16mm coverslips ● A small pipette ● A cavity staining block (a square moulded glass type with deep smooth circular cell) ● Some wooden toothpicks ● A pair of coverslip forceps ● A fine artists brush ● A fresh diatom sample (an older untreated/unpreserved sample will do just as well) ● A quantity of Distilled water ● A hot plate ● A ceramic tile ● A suitable High Refractive Index Mountant file:///L|/Amateur%20Diatomist/AD%20Web%20Site/vol6pt1/vol6pt1sub.htm (6 of 102)15/10/2014 18:09:32 The Amateur Diatomist Preliminary: The melting point of the Silica frustule is circa 1500 degrees Celsius.