Specific Purpose for Each Etude, i.e. Kayser, Kreutzer, etc.
I wish there was a guide to why we practice certain etudes, specifically what issue each etude addresses, i.e. left hand, right hand, bow distribution, string crossings, etc.
violinwiki.org are compiling a violin etude thesaurus "categorized by the skills that [the etudes] develop". Included so far are Wohlfahrt, Kayser, Kreutzer, Mazas op. 36/1, Fiorillo, Rode op. 22 and Gaviniés.
Why don't you just look through it and write your own? It's not celestial navigation.
indeed Rae-Ann seems to ask the question the wrong way, as indeed when you see an etude and try it out you will immediately have a sense of what this etude is about. but probably she really wanted to ask the reverse question: some kind of catalogue that maps techniques to etudes.
Katarina's comment is very useful, but also, it should be fairly easy to figure out what an etude is focused on. If you see a lot of string crossings, it's probably (at least partly) about string crossings. etc.
There are editions of etudes where the editor gives hints in the title line of each etude. E.g. Mazas: In the Peters edition you will find titles like "staccato" "trills" etc. Not every etude is so characterized but many of them.
What Jean said.
Following up on Albrecht, what does one do with the Kayser study that says "Comodo"? (**Flush!!**)
I understand this was a joke Paul, but anyway, a Comodo study means: for this one you can focus entirely on tone quality and intonation, don't worry about the tempo.
Jean, that's interesting! Never knew what that term meant.
I'm not disagreeing with Jean, but you should be working on tone quality and intonation on every piece you ever play, so I can't see the need for a specific étude for it. I'd assume comodo just means "comfortable tempo" (to contrast with the velocity exercises) and I'd play the piece and see what it has to offer.
Katarina: Thanks for sending info about that site. It's got a lot of what I was looking for.