Could not complete log in. Possible causes and solutions are:
Cookies are not set, which might happen if you've never visited this website before.
Please open https://media.dlib.indiana.edu/ in a new window, then come back and refresh this page.
An ad blocker is preventing successful login.
Please disable ad blockers for this site then refresh this page.
The third film in a five-film series, this film illustrates how pre-school children use the forms and arrangements of the words of their language to convey meaning. This is the grammar of the language. This film shows how patterns of organization differ from language to language and are based not so much on logic as on customs and conventions peculiar to each language. A class in German shows how grammatical patterns and their variations are taught by modern methods.
University Films, J. D. Watson, Irwin H. Herskowitz
Summary:
Describes RNA and DNA which are favored as the carriers of genetic information. Presents DNA molecules as shown in the electron microscope and describes the polymeric nature of the DNA molecule and DNA nucleotides. Compares the base content of DNA from various organisms. Describes in detail the three-dimensional organization of DNA as revealed through X-ray diffraction experiments. Pictures a Watson-Crick double helix model of DNA which suggests that DNA may replicate by the two complementary chains separating with each single strand then acting as a template to form its complement. Lecture given by Dr. J. D. Watson.
Describes the ways in which genes produce phenotypic differences by acting very early in embryonic development. Shows that this action may take place at a distance through chemical messengers (pituitary dwarfism in the house mouse, lethal giant larva in Drosophila), or it may involve tissue induction systems (Brachyury and taillessness in the house mouse). Discusses the development of eye color in Drosophila as a model of how each of the steps in a chain of chemical processes leading to development is under genic control. Lecture given by Dr. L. C. Dunn.
Portrays the role of developmental genetics in dealing with ways phenotypes come into being through the action of genes. Presents a complete discussion of the Creeper domestic fowl--its genetic basis, morphology, embryological history, and the experimental work that led to an understanding of how this gene affects early development to produce the morphological features seen as the outcome of the developmental process. Lecture given by Dr. L. C. Dunn.
Shows the parts of a single ram vertical machine; how to interpret the blueprint of a broaching tool; how to install broaching inserts for straddle broaching; how to mount the toolholder with its assembled broaching tool; how to mount and adjust the work fixture; and how to surface-broach at production rate.
Pictures reproductive isolation originating through interspecific hybridization, via amphyploidy (radish-cabbage, new world cottons, goatsbeard species), and by means of introgression (tobacco, rose family, maize-teosinte), and by the direct recombination of the products of crossing and the establishment of recombinations (larkspur). Specifies ways in which natural selection can aid reproductive isolation directly or indirectly. Depicts hybridization as a powerful stimulus in species formation and as a valuable experimental tool for the study of the genetic basis for species differences. Lecture given by Dr. G. L. Stebbins.
Demonstrates independent segregation by different pairs of genes using Mendel's data. Emphasizes the chromosomal activities during meiosis which are responsible for independent segregation. Describes the Punnett Square and the branching track methods of combining gametes at random. Discusses test crosses and linkage (as the exception to independent segregation), and shows that independent segregation proves the separability of the germ plasm into many gene pairs. Depicts the role of genetic recombination in speeding the process of evolution. Lecture by Dr. E. Altenburg.
Discusses the effect of various levels of inbreeding (self-fertilization, sib matings, half-sib matings, cousin marriages) upon making heterozygous genes homozygous with the consequent loss of vigor. Presents data for the increased risk of genetic defect from cousin marriage in studies of phenylketonuria, of a Japanese population and a French population. The concept and estimation of lethal equivalents are given. Shows how increases in heterozygosity increase vigor (heterosis); hybrid vigor in corn in described in detail. Lecture given by Dr. J. F. Crow.
Portrays the frequency of mutants in the population gene pool as dependent upon their rate of origination and selection coefficient. Discusses the population fate of dominant lethals (retinoblastoma), dominant detrimentals (achondroplasia), and recessive lethals (juvenile amaurotic idiocy). Describes in detail the loads of mutations carried in natural populations of Drosophila pseudo obscura and in man. Points out the fact that while most mutants are detrimental in the normal environment of the species, some may be advantageous in a different environment. Lecture given by Dr. Th. Dobzhansky.
Demonstrates through slow motion and natural photography the positions and movements of the "Hoosier Promenade." Opens with a group of eight dancers performing the introduction to the dance. Shows each pair of dancers, identified by a number, demonstrating the different parts of the dance and how each step flows smoothly into the next. Concludes with the performance of the dance to a record.
Uses animation, slow motion, and real photography to demonstrate the positions and movements of dancers and dancing couples in the "grapevine twist." Shows each part of the dance separately and then shows how each step flows smoothly into the next as the dancers perform to synchronous music.
Teaches the square dance figure "Take a Little Peek," with synchronous music and action. Presents live and animated demonstrations of the dance at regular speed and in slow motion, and explains the positions of partners, how to honor corners and partners, and how the steps are performed to facilitate the continuity of the dance. Pictures groups dancing the figure to regular square dance music in a natural situation.
Demonstrates through slow motion and natural photography the positions and movements of the "Texas Star." Opens with a group of eight dancers performing the introduction to the dance. Shows each pair of dancers, identified by a number, demonstrating the different parts of the dance and how each step flows smoothly into the next. Concludes with the performance of the dance to a record.
Demonstrates various methods of preparing materials to be used on different types of still projectors. Explains that instructional materials may be prepared for projection by utilizing their qualities of opacity, translucency, and transparency. Shows the use of carbon film, adhesive coloring materials, India ink, and sheets of plastic. Demonstrates a technique for stenciling on carbon film and a method for making plastic transparencies from magazine pictures.
**WARNING: CONTAINS GRAPHIC IMAGES OF LAB TEST ANIMALS** Illustrates the basic techniques of obtaining germfree environment, germfree animals, and methods of germfree miantenance. Demonstrates the methods by which germfree animals may be obtained as with the chick from the egg and a guinea pig from a Cesarian operation. Concludes that thee techniques contribute in the field of immunilogical studies and in the study of tissue response to parasites.
Describes the states of Texas, Louisiana, Mississippi, Alabama, and Florida as comprising the Gulf Coast region of the United States. Picture crops in Florida and explains that these crops are grown twelve months of the year. Contrast the varieties of soils found in the region. Briefly describes the large ports of Houston and New Orleans. Highlights the industires of the region including oil, grazing, and lumbering.
Division of Visual Aids, U.S. Office of Education (Producer), Federal Security Agency (Producer), Ray-Bell Films, Inc. (Producer)
Summary:
Explains why accessories are used with gage blocks; shows how to inspect a plug gage, an adjustable snap gage, a profile gage, a ring gage, and a screwthread pitch; and shows how to build a height gage and scriber.
Teaching Film Custodians abridged classroom version of a Cavalcade of America television episode, "The Last Will of Daniel Webster" (season 2, episode 8), which first aired November 14th, 1953 on ABC-TV. The film is a re-enactment of Webster's political career, as it influenced and was influenced by the slavery issue from 1830 until his death in 1852. It presents his relationships with Senators William Seward and Henry Clay and provides a basis for assessing his motivation in supporting Clay's Compromise of 1850. The film begins with an 1830 meeting between Webster, the presidential hopeful, and a newspaper publisher who offers support if Webster compromises in order to unite factions; Webster refuses. The film later presents Webster's conflicting stands on slavery before, after, and as communicated in, his controversial speech of March 7, 1850 that supported Senator Clay's compromise bill.
Comprised of three short films by Walton Films, "The Reign of King George VI," "Elizabeth - Our Queen," and "Trooping the Colour Ceremony," and one film by Peak Film Productions, "London," about England's Royal Family and London (in order of appearance):
The Reign of King George VI - “A tribute to His late Majesty, including his Coronation, war-time shots with his troops, post-war years, and the last tragic pictures taken at London Airport on January 31st, 1952. The Lying-in-State and Royal Funeral.” - Walton Films 1958 Film Catalogue
Elizabeth - Our Queen - “A fine film portrait of our gracious Sovereign, showing her wedding in Westminster Abbey, a family gathering when Princess Anne was christened, and other events leading to her accession.” - Walton Films 1958 Film Catalogue
London (K68, Reel 1) - “Piccadilly; Eros; Night Signs; Oxford Street; Park Lane; Hyde Park Corner. United States Embassy; Roosevelt Memorial.” - Peak Film Catalogue 1954
Trooping the Colour Ceremony - “The historic ceremony as the Guards honour the Queen’s Official Birthday. Magnificent close-ups of Her Majesty at Buckingham Palace and Horse Guards Parade." - Walton Films 1958 Film Catalogue
Shows the geological influence on local distribution of plants in the non-glaciated area of southwestern Wisconsin. Highlights many soil conditions and the variety of plants in their region. Categories each plant group shown and superimposes botanical names of each plant shown.
