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 251 · DO #1524 · 212_Haas_Bx1FF3_r

Collection
Theodore Philipp Haas (1892–1977) papers
Item/Folder
Typescript or Holograph Articles/Lectures, n.d.
Digital Object
DO #1524, page 251
Collection-level dates
1906–1986
Open PDF at page 251 ↗

Page transcription

Scientific Plant Photography.
by Theodor Philipp Haas, Ph.D., Botanist.

I am a botanist, and especially a plant morphologist, interested mainly in the shape of plants and in the enormous multiplicity (Mannigfaltigkeit) which we can observe in the plant kingdom. I am studying this in roots, shoots and flowers, and I am teaching it in a college.

I want to photograph in color what I see with the naked eye and by the use of a dissecting microscope, which reproduces subjects in three dimensions. For my work magnifications up to 150 x are sufficient. I must emphasize, I am by no means a professional photographer, but a scientist, and plant photography is only a tool for my scientific work, and not the main purpose! On the other hand I have a long experience with plant photographing, and - as a botanist - I am trained to observe many things to which the average person would not give any attention. When many of my pictures are considered as beautiful, so I can only say, many plants are beautiful indeed!

Besides photographing plants outdoors or in greenhouses, I also must photograph illustrations in books and magazines, in color and black and white, for my teaching purposes.

In this article I must talk about the technical side of my plant photographing. About a year ago I obtained a "Kine Exakta II", a single lens mirror reflex camera, and I am indeed very satisfied with it. I have an extension tube which is longer than usual and enables me to go very close to the subject. Close-up photography plays a decisive part in scientific plant photography. I also have a microscope attachment which I place upon my Bausch and Lomb dissecting microscope. Between the attachment and the camera one or two parts of the extension tube must be placed. These rings increase the magnification. The lens of the camera is not used; the eyepiece of the microscope replaces it. (Ill.

Finally, I obtained recently a lens hood and a filter to be able to use outdoor - day light-Kodachrome films indoors, when exclusively