Arthur Hill Hassall, physician & sanitary reformer : a short history of his work in public hygiene, and of movement against the adulteration of food and drugs / [Edwy Godwin Clayton].
- Clayton, Edwy Godwin.
- Date:
- 1908
Licence: In copyright
Credit: Arthur Hill Hassall, physician & sanitary reformer : a short history of his work in public hygiene, and of movement against the adulteration of food and drugs / [Edwy Godwin Clayton]. Source: Wellcome Collection.
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![‘ Hassailia cryptophila — Palmella cryptophila, Carmich. (MSS). Haematococcus sanguineus, Harvey ([MS. ?] inpart). Haematococcus cryptophilus, Hassall. ‘ Hassallia Allmani— Haematococcus Allmani, HasslaW]. ‘ Chlorina :— ‘Hassallia Mtirorwn— Protococcus viridis, Agardh. Chlorococcum murorum, Grevill. Chlorococcus muralis, Menegh. Pleurococcus murorum, Menegh. Haematococcus murorum, Hass[air\.' Subjoined is another extract from Trevisan’s monograph:— ‘III. Genere.—Pleurococcus, Menegh. ‘ Hassall abbraccia la falsa opinione di Greville ed Harvey che le cellule matrici de’ Protococcus sieno “ sessile on a gelatinous transparent mass”: e questo errore influisce a fargliene commettere un altro, riunendo in uno solo i due generi Pleurococcus e Bichatia.’—Trev., 1848, p. 31. At a much later date (1886-88), Bornet and Flahault revised the previous nomenclature, and retained, or rather, re-adopted, the name Hassallia, applying it to one species only, Hassallia hyssoidea. Their reasons are given in the following extract — ‘XVIII. Hassallia, Berkeley. ‘In Hassall, “Hist . . .,” I., p. 231, P^o parte. ‘ Scytonema, Sirosiphon, Hapalosiphon, Tolypothrix spec. Fila fragilia pseudo-ramosa; pseudo-rami solitarii, eruptione laterali trichomatis formati, sub heterocysta ipsa, rarius inter heterocystas, egredientes. Vagina tenuis, sicca, fragilis. Algae crustaceo-tomentosae, minutae; Plantae terrestres. ‘ Le genre Hassallia Berkeley fait double emploi avec deu-x genres anterieurement publics: Sirosiphon Kiitzing et Stigonema Agardh ; aussi n’a-t-il pas et6 admis. Nous le reprenons, non pas sous sa forme primitive, mais en le J From Ed. Bornet et Ch. Flahault’s EMsion lies Nostocachs HJh'rocysUes (i88e-88), 4 parts and index, pp. 115-117.](https://iiif.wellcomecollection.org/image/b28989995_0081.jp2/full/800%2C/0/default.jpg)
