How to prepare herbarium sheets
Hello! My name is Jamie and I am the curatorial apprentice within the herbarium.I have been here since February and will continue to be here until the following February (2015). I have been in the herbarium for 5 months now, and we thought it was time for me to introduce myself to the blog. My first 5 months in the herbarium have involved quite a variety of different tasks. These tasks have involved relocating part of our collection to the newly installed roller racking, preparing specimens to go out for educational visits, and one of my favourites, reorganising the Materia Medica collection.
Along with the mentioned above, I have also been doing some remounting of specimens. Below you will find a selection of pictures, with a description, that shows the process of remounting a specimen. The main purpose of re-mounting specimens is for convenience in handling specimens of difficult shapes or sizes during the subsequent steps of preparation and examination. A secondary purpose is to protect and preserve the specimen as best as we possibly can.
The photo above shows the area the remounting will be taking place. Remounting is the process of replacing the cartridge paper – that the specimen is placed on – and the gummed linen tape that are no longer in a satisfactory condition.
As you can see in the first image, the specimen is placed in a flimsy folder and is not in a very good condition. In image two you can see the specimen is poorly kept, and is without any gummed tape – you can clearly see this in the image below.
As you can see in the above images this specimen clearly needs to be remounted. The first process of the remounting is to replace the sheet the specimen will be laying on, in this case from a flimsy tissue type paper, to our preferred cartridge paper. Image two shows you the new sheet for the specimen.
The above images are of the gummed tape we use – this tape is acid free and can last a very long period of time. In the second of these images you see the tape cut into thin strip, this is so we can give the specimen a snug, secure fit.
To get the gummed tape to stay secure, we have to wet both ends. But never the middle, as we don’t want to damage the specimen.
The first image above shows you how a specimen should correctly be kept. In the second image, you can see how secure the specimen looks, compared to its original sheet.
Once the specimen has a new sheet and is secure, we then have to transfer any information from its original sheet to the new one. We do this by cutting around the required information and then glue it to the new sheet, as you can see in the below image.
We then add the finishing touch, which is the Manchester Museum Herbarium stamp.