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HI Petro,

I  looked up what the 1000-page book "Geschichte der Mikroskopie" 
(History of Microscopy) by Dieter Gerlach from 2009 has to say about the 
issue.

It says that the RMS introduced a standard slide size specifically for 
the purpose of exchanging slides. The society members wanted to exchange 
permanent samples and the slides had to fit in their collection boxes, 
hence a standard was needed.

So this confirms that there was no standard before (at least in England) 
and slides hat just some random size, dependent on the slide maker.

Best

Steffen

Am 19.09.2022 um 23:51 schrieb George McNamara:
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> *****
>
> Brian J Ford (I encourage linking in with Brian, or at least following 
> him on linkedin - https://www.linkedin.com/in/profbrianjford/ ) wrote me:
>
> There were sliders before the 3x1" slide; they were roughly similar in 
> size to each other but - until the RMS laid it down for glass slides - 
> there was no standard.
>
> On 9/19/2022 9:41 AM, Steffen Dietzel wrote:
>> *****
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>> posting.
>> *****
>>
>> Oh, ok. Did you try the Wikipedia article "Microscope slide"? It has 
>> some sources that might be helpful.
>>
>> In the German article it says 76 × 26 mm (DIN ISO 8037-1) was in 
>> earlier times called „englisches Format“ in contrast to the „Gießener 
>> Format“ with the size 48 × 28 mm. No source for that, but a search 
>> query for "Objektträger Gießener Format" comes up with a few hits, 
>> also in google books. A book from 1923, Botanisches Praktikum, 7ed, 
>> by Strasbuger und Koernicke, also makes that distinction between the 
>> two and no other types are mentioned.
>>
>> Queckett's book from 1848 that I mentioned earlier has a chapter "on 
>> cutting glass" where it is said "Now supposing we wish to cut the 
>> slides of
>> the usual size, viz., three inches long by one inch wide, ..." (page 
>> 243)
>>
>> Best
>>
>> Steffen
>>
>>
>> Am 19.09.2022 um 13:32 schrieb Khoroshyy Petro:
>>> *****
>>> To join or leave the confocal microscopy listserv or to change your 
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>>> Post images on http://www.imgur.com and include the link in your 
>>> posting.
>>> *****
>>>
>>> Thanks a lot.
>>> It is an interesting book :), I will have a look at it.
>>> I am searching for microscopy slide sizes, which were popular before 
>>> the
>>> RMS 3x1 inch standard took over the world.
>>> So far I was not able to find any references for it.
>>> Thanks.
>>> Best.
>>> Petro.
>>>
>>>
>>> On Mon, 19 Sept 2022 at 10:51, Steffen Dietzel <[log in to unmask]> 
>>> wrote:
>>>
>>>> *****
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>>>> email
>>>> address, go to:
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>>>> Post images on http://www.imgur.com and include the link in your 
>>>> posting.
>>>> *****
>>>>
>>>> Hi Petro,
>>>>
>>>> in that small 40 years window I have only one book in my collection of
>>>> pdfs:
>>>>
>>>> Micrographia containing practical essays on reflecting, solar,
>>>> oxy-hydrogen gas microscopes, micrometers, eye-pieces etc etc
>>>>
>>>> by C. R. Goring, M.D. and Andrew Pritchard, Esq. M.R.I. London, 1837.
>>>> The pdf obviously is from google books. Whether it is a 'good' book, I
>>>> am not sure. (This is not 'the' Micrographia, the famous book by 
>>>> Robert
>>>> Hooke was from 1664)
>>>>
>>>> A more famous book is already from 1848: Queckett's practical treatise
>>>> on the use of the microscope.
>>>>
>>>> Maybe Google Books has even more from your desired time period, I did
>>>> not check.
>>>>
>>>> Best
>>>>
>>>> Steffen
>>>>
>>>>
>>>> Am 06.09.2022 um 09:45 schrieb Khoroshyy Petro:
>>>>> *****
>>>>> To join or leave the confocal microscopy listserv or to change your
>>>> email address, go to:
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>>>>> Post images on http://www.imgur.com and include the link in your
>>>> posting.
>>>>> *****
>>>>>
>>>>> Hi list.
>>>>> I guess it is a bit far from the topic of this list, but I think 
>>>>> someone
>>>>> can know it.
>>>>> I would like to ask for a good microscopy book title published 
>>>>> before RMS
>>>>> creation. In the period between 1800-1839.
>>>>> Thanks.
>>>>> Petro.
>>>>>
>>>> -- 
>>>> ------------------------------------------------------------
>>>> Steffen Dietzel, PD Dr. rer. nat
>>>> Ludwig-Maximilians-Universität München
>>>> Biomedical Center (BMC)
>>>> Head of the Core Facility Bioimaging
>>>>
>>>> Großhaderner Straße 9
>>>> D-82152 Planegg-Martinsried
>>>> Germany
>>>>
>>>> http://www.bioimaging.bmc.med.uni-muenchen.de
>>>>
>>>
-- 
------------------------------------------------------------
Steffen Dietzel, PD Dr. rer. nat
Ludwig-Maximilians-Universität München
Biomedical Center (BMC)
Head of the Core Facility Bioimaging

Großhaderner Straße 9
D-82152 Planegg-Martinsried
Germany

http://www.bioimaging.bmc.med.uni-muenchen.de