Hunt Institute for Botanical Documentation
A Research Division of Carnegie Mellon University

Hunt Institute Archives Text Discovery Platform

Search a large and growing portion of our online collections, including handwritten documents.
PROTOTYPE

This prototype uses state-of-the-art artificial intelligence, including a vision-language model (VLM) capable of reading handwritten documents as well as typed and printed text, to create searchable transcriptions of digitized materials in the Hunt Institute Archives. This makes it possible to search the textual contents of individual pages, including material that may not be described in the archival catalog.

Use Keyword search for specific words, names, dates, scientific names, or phrases. Try Semantic search (experimental) to describe a topic, question, or kind of material when you do not know the exact wording used in the documents.

About the AI-generated transcriptions

The transcriptions are generated automatically from page images and may contain errors, especially with difficult handwriting, unusual names, multiple languages, image-quality problems, or complex layouts. They are intended primarily as a discovery aid rather than authoritative transcriptions.

Each result provides the generated transcription and links to the original digitized material and associated archival description so that readings can be checked against the source. The transcription workflow uses AI models run locally by the Hunt Institute.

About Keyword and Semantic search

Keyword search is the default and matches the wording in the transcriptions. Results contain all your terms. Use quotes for an exact phrase. Substring matching is supported, so aceae can find plant-family names ending in -aceae.

Semantic search (experimental) is useful when you know what kind of material you are looking for but do not know the words used in the documents. It ranks transcribed passages by similarity of meaning, so relevant results may not contain the exact words in your query.

Semantic queries can be broad research topics, descriptions of activities or relationships, or natural-language questions. For example:

plant collecting and fieldwork in South America medicinal, culinary, or other traditional uses of plants chromosomes and plant classification early herbals and botanical illustrations botanical institutions exchanging plants, seeds, and specimens microscopy and photomicrography in botanical research How did botanists and gardeners introduce plants from one region to another? grafting, budding, and propagation of tropical fruit crops

Semantic search is not a chatbot: a question is used as a search query, and the system returns archival passages that appear conceptually related to it rather than generating an answer or summary. Short descriptions and ordinary research questions generally work better than lists of disconnected keywords. Quotation marks have no special meaning in Semantic mode. Cross-language matching may work in some cases, but it should not be treated as translation.

Keyword and Semantic search are complementary. Keyword search lets you require particular wording; Semantic search can surface differently worded passages about the same subject. Depending on the research question, trying both can reveal different useful material.

Open a result: use the prominent page-and-transcription link to see the metadata, PDF, and full transcription. Keyword-search terms are highlighted in the transcription.

Archives Collections Database (ArchivesSpace): the Collection, Item/Folder, and Digital Object links open the corresponding archival records. Collection-level dates describe the collection as a whole, not necessarily the specific item or page.

If a PDF does not load: on the detail page, use the Digital Object link, click “Go to file” in ArchivesSpace, and navigate to the page number shown here.

Current limitations
  • Automated transcriptions can contain missing or incorrect text or unintended repetition. Difficult handwriting, image quality, unusual layouts, and multiple languages can reduce accuracy. Always consult the original page image when an exact reading matters.
  • Semantic search remains experimental. Its rankings are an additional discovery aid, not a complete or definitive set of relevant results, and highly ranked pages can sometimes be only broadly related.
  • This is an active prototype. Search coverage, transcriptions, functionality, and the interface may continue to change as additional archival material is processed and the system is improved.

← Back to results

Page 9 · DO #1593 · 72_Degener_Bx2FF17B_r

Collection
Otto Degener (1899–1988) papers
Item/Folder
Correspondence, 1958
Digital Object
DO #1593, page 9
Collection-level dates
1915–1985, n.d.
Open PDF at page 9 ↗

Page transcription

wunderbare Lichtbilder zu bekommen.Legt man die Wedel unter das UV-Auflicht Mikroskop, so sieht man die Blattzähne leuchten, nicht aber die bekannten Wassergrubender Farne.Im Wedel beobachtet man nur geringe Fluoreszenz in den feinsten Bündelchen.Es kann infolge des Casparyschen Streifens die Lösung nicht in den Wändungen ins Blattgewebe.Alles wird durch das Plasma abgeschirmt.Am Ende der Zähne fällt dieses Sieb und die nur in den Wändungen sich bewegende Lösung kommt heraus.Ich habe darüber eine kleine Arbeit geschrieben, musste jedoch auf die Bilder verzichten.Jetzt habe ich gute Fotos und Mikrofotos.Wenn Sie Interesse haben, können Sie Abzüge haben.Ich mache ja mir selber alles in Diapositiven.

Des weiteren werde ich mir von den Sporangienmikrophotos auch solche im polarisierten Lichte machen, da wie überall so auch hier die Richtung der Celluloseketten die Richtung der besten Dehnbarkeit ergibt.Die anderen Farne sind genau untersucht (Gleicheniaceae etc) aber alles liegt unpubliziert hier.Vor langen Jahren habe ich eine Arbeit über dieses Thema geschrieben, die aber zuviel enthielt und in der das untergeht.Die Micellierung ist nur in den Händen einer geringen Zahl von Hinen.

Soeben erhalte ich die Nachricht, dass meine Arbeit über "Blumen wie sie die Insekten sehen" in größerem Umfang gedruckt werden soll.Wir wollen sogar eine Farbtafel befügen lassen.Diese und 1-2 Schwarzweissstafeln mit UV-Bildern gehören dazu, weil man dann die Unterschiede schlagend sieht.Vielleicht wird ein kleines Buch daraus.

Doch nun muss ich schliessen, da andere Arbeit wartet.

Wie interessant wären diese Blütenfarbversuche gerade in Tropen! Aber dafür bekommt man keine Reisestipendien.Alte Herren und Vettern und Basen derselben, die bekommen diese Gelder zur Förderung der Wissenschaft!

Mit besten Grüßen
Ihr ergebener
Dr. Riesewoldt.