(Originally published in 1906-08. This volume from the Cor...)
Originally published in 1906-08. This volume from the Cornell University Library's print collections was scanned on an APT BookScan and converted to JPG 2000 format by Kirtas Technologies. All titles scanned cover to cover and pages may include marks notations and other marginalia present in the original volume.
https://www.amazon.com/Experimental-Examination-Phenomena-Attributed-Fluctuation/dp/1112456643?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=1112456643
(An experimental examination of the phenomena usually attr...)
An experimental examination of the phenomena usually attributed to fluctuation of attention. The intermittence of minimal visual sensations (1906). This book, "The intermittence of minimal visual sensations", by Clarence Errol Ferree, is a replication of a book originally published before 1906. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible.
https://www.amazon.com/intermittence-minimal-visual-sensations/dp/5518601379?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=5518601379
https://www.amazon.com/1877-1942-experimental-examination-fluctuation-intermittence/dp/B004IPA6AM?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=B004IPA6AM
(This book was originally published prior to 1923, and rep...)
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
https://www.amazon.com/Reprints-articles-perimetry-Clarence-Ferree/dp/B009YOPVSO?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=B009YOPVSO
(Excerpt from An Experimental Examination of the Phenomena...)
Excerpt from An Experimental Examination of the Phenomena Usually Attributed to Fluctuation of Attention: The Intermittence of Minimal Visual Sensations; Thesis For the sake of clearness, the following order of presentation will be adhered to as closely as possible. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
https://www.amazon.com/Experimental-Examination-Phenomena-Attributed-Fluctuation/dp/1334229600?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=1334229600
(Excerpt from Some Areas of Color Blindness of an Unusual ...)
Excerpt from Some Areas of Color Blindness of an Unusual Type in the Peripheral Retina While a red light does not give green contrast sensation, it does produce an effect on a neighboring field which raises the threshold or diminishes the sensitivity to red. That is, a gray ring on a red ground appears gray but an amount of red can be added to it without being sensed which is supraliminal when red is not present in the sur rounding field. In other words a physiological induction seems to be present which inhibits the complementary excitation although the induced excitation does not itself arouse sensation. We have here, therefore, another evidence that the complementary and induction relations between red and green are intact, the ability of the green excitation to arouse sensation alone being absent. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
https://www.amazon.com/Blindness-Unusual-Peripheral-Classic-Reprint/dp/1333337000?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=1333337000
(Unlike some other reproductions of classic texts (1) We h...)
Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
https://www.amazon.com/Experimental-Examination-Attributed-Fluctuation-Intermittence/dp/1313450537?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=1313450537
(This book was originally published prior to 1923, and rep...)
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
https://www.amazon.com/experimental-examination-attributed-fluctuation-intermittence/dp/B00B6BHZUA?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=B00B6BHZUA
( This work has been selected by scholars as being cultur...)
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
https://www.amazon.com/Reprints-Articles-Perimetry-Clarence-Ferree/dp/1373537604?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=1373537604
research scientist in psychology and physiological optics
He was born in Sidney, Ohio, the third of four children and youngest son of Jeremiah Dixon Ferree, a prosperous farmer of Pennsylvania Huguenot descent, and Arvesta (Line) Ferree. Both parents were natives of Shelby County, Ohio, and members of the Methodist Church.
After teaching in a public secondary school for three years, young Ferree attended Ohio Wesleyan University, where he received the B. S. and A. M. degrees in 1900 and an M. S. in 1901.
In 1902 he began graduate work in psychology at Cornell University.
He spent the year 1905-06 as an instructor in physics and psychology at the University of Arizona, but returned to Cornell, where he received his Ph. D. under Edward B. Titchener in 1909.
Meanwhile, in 1907, Ferree had been appointed lecturer in experimental psychology at Bryn Mawr College. There he spent the next two decades of his career, becoming associate professor and director of the psychological laboratory (1912) and professor of psychology (1917).
Among his first graduate students was Gertrude Rand (October 29, 1886 - June 30, 1970), a Cornell alumna (A. B. 1908) who received the Ph. D. degree at Bryn Mawr in 1911.
Thereafter his interests narrowed to physiological optics, the relation between vision and illumination and ophthalmology. In 1912 he served on a joint committee of the American Medical Association and the Illuminating Engineering Society to study lighting in relation to the welfare and hygiene of the eye.
He was the first to demonstrate in the laboratory that the eye functions better in one system of illumination than in another.
He devised equipment for measuring the speed of ocular accommodation and convergence, visual acuity, light and color sense, visual fields and areas of impaired seeing, the visual effects of various spectral wavelengths, and visual reaction times and sensitivities.
He and his wife also made contributions in the fields of industrial lighting, efficiency engineering, and direct-indirect (louvered) lighting fixtures. During World War I, at the request of the military forces, he undertook investigations of ocular fitness and individual differences in visual acuity at low illuminations, to aid in such tasks as selecting men for lookout duty on battleships.
Ferree left Bryn Mawr in 1928 to become director of the research laboratory in physiological optics at the Wilmer Ophthalmological Institute of the Johns Hopkins University Medical School and Hospital, where (in 1932) he was appointed adjunct professor of physiological optics.
Gertrude Rand went with him to Johns Hopkins as associate professor in research ophthalmology (1928 - 32) and in physiological optics (1932 - 36).
After failing health forced Ferree to retire in 1936, he continued work at his home in Baltimore, with his wife as his research associate.
Ferree died at his home in Baltimore in 1942, at the age of sixty-five, of a coronary occlusion.
Gertrude Rand, who in Ferree's declining years seems to have been the stronger member of the team, continued her research--first as associate director of the physiological optics research laboratory at the Wilmer Institute (1928 - 36) and later at Columbia University's College of Physicians and Surgeons as research associate in ophthalmology on the Knapp Foundation (1943 - 57).
She became known especially for her part in developing the Hardy-Rand-Rittler color plates, a recognized test for color deficiency and color blindness.
He made lasting contributions as a pioneer in the standardized quantitative study of visual functions, stressed the development of precision equipment, and exemplified the interdisciplinary approach to ophthalmologic investigation. With various collaborators, chiefly his wife, he published some 250 papers; some of those by Ferree and Rand were collected in Studies in Physiological Optics (2 vols. , 1934). Although much of the apparatus Ferree devised has since been superseded, the basic principles of the Ferree-Rand visual fields perimeter are still considered highly significant and useful.
(Excerpt from An Experimental Examination of the Phenomena...)
(Excerpt from Some Areas of Color Blindness of an Unusual ...)
(Unlike some other reproductions of classic texts (1) We h...)
(This book was originally published prior to 1923, and rep...)
(This book was originally published prior to 1923, and rep...)
( This work has been selected by scholars as being cultur...)
(An experimental examination of the phenomena usually attr...)
(Originally published in 1906-08. This volume from the Cor...)
In 1912 he served on a joint committee of the American Medical Association and the Illuminating Engineering Society to study lighting in relation to the welfare and hygiene of the eye.
Known to his associates as an intensive worker and a man of "aggressive drives, " he was also able in directing the work of others.
Ferree's early interests in psychology lay in the experimental study of conscious processes such as attention, hearing, and seeing. To attack these problems, he concentrated on the function of human vision and developed methods and instruments to measure, in a precise way, the eye's physiological response to visual stimuli.
Ferree was a member of various scientific organizations, including the American Psychological Association, the Illuminating Engineering Society, and the Optical Society of America.
With Gertrude Rand (who retained her maiden name in professional work) and the help of capable technical assistants, Ferree developed various optical apparatus, ophthalmological instruments, and glareless lighting appliances.
The two continued a close scientific collaboration, published a number of papers together, and were married on September 28, 1918; they had no children.
