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Henley's Twentieth Century Formulas, Recipes and Processes
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About this book
Henley’s Twentieth Century Formulas, Recipes and Processes is a practical handbook assembled by an unnamed editor in early 1914, who has drawn on a wide range of foreign and domestic technical periodicals to create a single reference for chemists, artisans and laboratory workers. The opening pages explain the editor’s method of selecting reliable sources, revising unsuitable formulas, and discarding doubtful procedures, all with the aim of offering a “repository of useful knowledge” that can be adapted to the variable purity of chemicals, temperature conditions, and the skill of the practitioner. The work is organized by topic, providing multiple variations of each recipe so that readers can choose the version that best fits their materials and equipment, and it mixes modern methods with long‑standing trade secrets.
The tone is that of a meticulous early‑twentieth‑century technician, dense with measured instructions, chemical proportions and occasional anecdotal notes from contemporary journals. Readers who enjoy detailed, hands‑on guidance, whether they are historians of science, hobbyist chemists, or restorers of antique manufacturing techniques, will find the book’s methodical style and exhaustive citations both informative and evocative of the era’s industrious spirit.
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In addition to exercising the utmost care in selecting his materials from competent sources, the Editor has also modified formulas which were obviously ill adapted for his needs, but were valuable if altered. Processes of questionable merit he has discarded. By adhering to this plan the Editor trusts that he has succeeded in preparing a repository of useful knowledge representing the experience of experts in every branch of practical achievement. Much of the matter has been specially translated for this work from foreign technological periodicals and books. In this way the Editor has embodied much practical information otherwise inaccessible to most English-speaking people.
Each recipe is to be regarded as a basis of experiment, to be modified to suit the particular purpose in hand, or the peculiar conditions which may affect the experimenter. Chemicals are not always of uniform relative purity and strength; heat or cold may markedly influence the result obtained, and lack of skill in the handling of utensils and instruments may sometimes cause failure. Inasmuch as a particular formula may not always be applicable, the Editor has thought it advisable to give as many recipes as his space would allow under each heading. In some instances a series of formulas is given which apparently differ but slightly in their ingredients. This has been done on the principle that one or more may be chosen for the purpose in hand.
Recognizing the fact that works of a similar character are not unknown, the Editor has endeavored to present in these pages the most modern methods and formulas. Naturally, old recipes and so-called trade secrets which have proven their value by long use are also included, particularly where no noteworthy advance has been made; but the primary aim has been to modernize and bring the entire work up to the present date.
THE EDITOR.
JANUARY, 1914.
«PARTIAL LIST OF AUTHORITIES CONSULTED»
Apothecary, The. Berliner Drog. Zeitung. Brass World. British Journal of Photography. Chemical News. Chemiker Zeitung Repertorium. Chemisch Technische Fabrikant. Chemische Zeitung. Chemist-Druggist. Comptes Rendus. Cooley’s Receipts. Cosmos. Dekorationsmaler, Der. Deutsche Drog. Zeitung. Deutsche Goldschmiede Zeitung. Deutsche Handwerk. Deutsche Maler Zeitung. Deutsche Topfer und Ziefler Zeitung. Dingler’s Polytechnic Journal. Drogisten Zeitung. Druggists’ Circular. English Mechanic. Farben Zeitung. Gummi Zeitung. Journal der Goldschmiedekunst. Journal of Applied Microscopy. Journal of the Franklin Institute. Journal Society of Chemical Industry. Journal Suisse d’Horlogerie. Keramische Rundschau. La Nature. La Science en Famille. La Vie Scientifique. Lack und Farben Industrie. Legierungen. Le Genie Civil. Le Praticien. Leipziger Farber und Zeugdrucker Zeitung. Maler Zeitung. Metallarbeiter. Mining and Scientific Press. Neueste Erfindungen und Erfahrungen. Nouvelles Scientifiques. Oils, Colors, and Drysalteries. Papier-Zeitung. Parfumer, Der. Pharmaceutische Zeitung. Pharmaceutische Centralhalle. Pharmaceutische Era. Pharmaceutische Journal. Pharmaceutische Journal Formulary. Photo Times. Polytech. Centralblatt. Polyt. Notizblatt. Popular Science News. Pottery Gazette. Practical Druggist. Revue Chronometrique. Revue de la Droguerie. Revue des Produits Chimiques. Revue Industrielle. Science, Arts and Nature. Science Pratique. Seifensieder Zeitung, Der. Seifenfabrikant, Der. Spatula. Stein der Weisen, Der. Sudd. Apoth. Zeitung. Technisches Centralblatt. Technische Rundschau. Uhland’s Technische Rundschau. Verzinnen Verzinken Vernickeln, Das. Werkmeister Zeitung. Wiener Drogisten Zeitung. Wiener Gewerbe Zeitung. Zeitschrift für die Gesammte Kohlensaure Industrie.
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