science

G. W. Reynolds

G. W. Reynolds is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand G. W. Reynolds rather than just read about it. In short: Gilbert Westacott Reynolds (10 October 1895 Bendigo – 7 April 1967 Mbabane) was a South African optometrist and authority on the genus Aloe. Gilbert Reynolds arrived in Johannesburg with his parents in 1902, where his father started business as an optician.

Key takeaways

G. W. Reynolds belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect G. W. Reynolds to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of G. W. Reynolds from memory before moving on to harder problems.

Reference excerpt

Gilbert Westacott Reynolds (10 October 1895 Bendigo – 7 April 1967 Mbabane) was a South African optometrist and authority on the genus Aloe. Gilbert Reynolds arrived in Johannesburg with his parents in 1902, where his father started business as an optician. He received his education at St John's College where he was Victor Ludorum. After the outbreak of World War I, he enlisted and saw active service in South West Africa and Nyasaland with the rank of captain. Having qualified as optometrist he joined his father's practice in 1921. Reynolds developed a keen interest in the bulbs and succulents of South Africa at about this time. When he started his own country practice about 1930, he was able to travel extensively and gradually narrowed his interests to Aloe. Reynolds was guided in the early stages of his research by Dr I. C. Verdoorn and Dr R. A. Dyer of the Botanical Research Institute in Pretoria, later becoming the authority on Aloe and having an extensive knowledge of the genus in the field and under cultivation. To gather material for his book, he explored the entire country, collecting specimens, gathering data and taking photographs of the plants in their natural habitats. General Smuts, himself an avid collector and experienced botanist, wrote the foreword to the book. Before the publication of Reynolds' work, no comprehensive guide to the aloes had been compiled, except for various writings and monographs which did not attempt a complete coverage. He spent four weeks at Kew towards the end of 1960, checking the taxonomy, type specimens and identifications.

Publications Published books by G.W. Reynolds:

The Aloes of South Africa, Balkema, 1950. The Aloes of Nyasaland, Nyasaland Society and African Book Centre of Nyasaland, 1954. Les Aloes de Madagascar, Institut de Recherche scientifique de Madagascar, 1958. The Aloes of Tropical Africa and Madagascar, Aloes Book Fund, 1966.

Publications

Aloe broomii var. tarkaensis Reynolds, J. S. African Bot. 2: 72 (1936). Aloe bulbillifera var. paulianae Reynolds, J. S. African Bot. 22: 261 (1956). Aloe cameronii var. dedzana Reynolds, J. S. African Bot. 31(2): 167 (1965). Aloe comptonii Reynolds, Aloes S. Africa 382 (1950). Aloe divaricata var. rosea (Decary) Reynolds, Naturaliste Malgache 10: 133 (1958). Aloe gracilis var. decumbens Reynolds, Aloes S. Africa 358 (1950). Aloe howmanii Reynolds, Kirkia 1: 156 (1961). Aloe lineata var. muirii (Marloth) Reynolds, Aloes S. Africa 205 (1950). Aloe saponaria var. ficksburgensis Reynolds, J. S. African Bot. 3: 148 (1937). Aloe schweinfurthii var. labworana Reynolds, J. S. African Bot. 22(3): 140 (1956). Aloe somaliensis var. marmota Reynolds & P.R.O.Bally, J. S. African Bot. 30: 222 (1964). Aloe striatula var. caesia Reynolds, Fl. Pl. South Africa 16: t. 633 (1936). Aloe wickensii var. lutea Reynolds, J. S. African Bot. 3: 145 (1965). Notes on the Aloes of southern Ethiopia and Somalia, in Journal of The East Africa Natural History Society, Naibrobi, 1954, Pages 102–104. (online) Hunting aloes in East Africa, African Wild Life 6: 308-322 (1952) Hunting aloes in Nyasaland, African Wild Life 7: 102-111 (1953) Hunting aloes in Ethiopia and Somaliland, African Wild Life 8: 14-25 (1954) The Murchison Falls National Park, African Wild Life 8: 271-279 (1954) The Queen Elizabeth National Park, African Wild Life 9: 109-114 (1955) Hunting aloes in Madagascar, African Wild Life 9: 299-320 (1955) Hunting aloes in Eritrea and Ethiopia, African Wild Life 10: 205-214 (1956) Hunting aloes in Somaliland Protectorate, African Wild Life 12: 101-114 (1958) Hunting aloes in Nyasaland and Tanganyika Territory, African Wild Life 13: 35-52 (1959) Hunting aloes in Angola, African Wild Life 14: 13-25 (1960) He published numerous popular articles in African Wild Life detailing his collecting trips to places as far afield as Somaliland, Eritrea, Ethiopia and Madagascar, as well as many scientific papers in botanical journals on the subject of aloes. After his death, his collection of aloes was transplanted to the Mlilwane Game Sanctuary in Swaziland, with quite a number going to the National Botanical Institute in Pretoria.

Awards and fellowships Fellow of the Cactus and Succulent Society of America (CSSA), 1941 Fellow of the Linnean Society of London (F.L.S), 1951 Merit of the Southern Africa Association for the Advancement of Science, 1951 Honorary doctorate of the University of Cape Town, 1952 Bolus–Medal of the Botanical Society of South Africa, 1966

References

Standard Encyclopaedia of Southern Africa vol. 9 (NASOU 1973) ISBN 0-625-00325-X Colin C. Walker: Gilbert Westacott Reynolds: his study of Aloe and a bibliography of his work, Bradleya 28/2010, Dept. of Life Sciences, Open University, Milton Keynes, England. Mary Gunn, L. E. W. Codd: Botanical Exploration of Southern Africa, Balkema, Cape Town, 1981, ISBN 978-0-86961-129-6 Chuck Staples: Gilbert Reynolds Biography, (online-PDF) Archived 5 August 2019 at the Wayback Machine

Illustrations

Worked examples

Example 1 — a first encounter with G. W. Reynolds

Start with the simplest possible case. Write down what G. W. Reynolds claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to G. W. Reynolds before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about G. W. Reynolds ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of G. W. Reynolds

In research: G. W. Reynolds appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses G. W. Reynolds in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: G. W. Reynolds is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1895 births, 1967 deaths, 20th-century South African botanists, so understanding it makes those chapters shorter.
In everyday life: Look for G. W. Reynolds outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study G. W. Reynolds in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what G. W. Reynolds means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain G. W. Reynolds out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is G. W. Reynolds in simple terms?

Why does G. W. Reynolds matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study G. W. Reynolds?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on G. W. Reynolds.