Journal of the Franklin Institute, Հատոր 180Pergamon Press, 1915 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415] |
From inside the book
Արդյունքներ 79–ի 1-ից 5-ը:
Էջ 32
... contain but little organic matter , the best index of pollution now avail- able for the purpose of ascertaining whether a water- purification plant is overloaded is the number of B. coli per 100 cubic centimetres of water expressed as ...
... contain but little organic matter , the best index of pollution now avail- able for the purpose of ascertaining whether a water- purification plant is overloaded is the number of B. coli per 100 cubic centimetres of water expressed as ...
Էջ 35
... containing not less than 30 cubic centimetres of lactose peptone broth . These shall be incubated forty- eight hours at 37 ° Centigrade and observed to note their formation . " ( b ) From each tube showing that more than five per cent ...
... containing not less than 30 cubic centimetres of lactose peptone broth . These shall be incubated forty- eight hours at 37 ° Centigrade and observed to note their formation . " ( b ) From each tube showing that more than five per cent ...
Էջ 40
... containing water in 10 cubic centimetre amounts : Number of Samples 1,000 Gas 421 B. Coli Anaĕrobe 91 330 Actual Bile Presumptive B. Coli B. Coli Per cent . Per cent . 9.1 22.I The margin of error is greater in relatively pure water ...
... containing water in 10 cubic centimetre amounts : Number of Samples 1,000 Gas 421 B. Coli Anaĕrobe 91 330 Actual Bile Presumptive B. Coli B. Coli Per cent . Per cent . 9.1 22.I The margin of error is greater in relatively pure water ...
Էջ 42
... contain any B. coli in 100 cubic centimetres , but a water containing B. coli in 100 cubic centimetres should not necessarily be objected to without the examination of further samples . Experience has shown that even initially impure ...
... contain any B. coli in 100 cubic centimetres , but a water containing B. coli in 100 cubic centimetres should not necessarily be objected to without the examination of further samples . Experience has shown that even initially impure ...
Էջ 101
... containing rhodium and the greater losses being associated with iridium . Iron appears to lessen somewhat the loss of weight on heat- ing , but its presence is objectionable on account of the soluble oxide formed on the crucible surface ...
... containing rhodium and the greater losses being associated with iridium . Iron appears to lessen somewhat the loss of weight on heat- ing , but its presence is objectionable on account of the soluble oxide formed on the crucible surface ...
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Էջ 386 - THE BOYDEN PREMIUM URIAH A. BOYDEN, ESQ., of Boston, Mass., has deposited with THE FRANKLIN INSTITUTE the sum of one thousand dollars, to be awarded as a premium to "Any resident of North America who shall determine by experiment whether all rays of light,* and other physical rays, are or are not transmitted with the same velocity.
Էջ 104 - As a unit of resistance, the international ohm, which is based upon the ohm equal to io9 units of resistance of the CGS system of electro-magnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grammes in mass, of a constant cross-sectional area and of the length of 106.3 centimeters.
Էջ 640 - Esq., awarded annually to those workers in physical science or technology, without regard to country, whose efforts, in the opinion of the Institute, acting through its Committee on Science and the Arts, have done most to advance a knowledge of physical science or its applications.
Էջ 640 - ... and containing the name and address of the author of the memoir. It shall be the duty of the Secretary of the FRANKLIN INSTITUTE to keep these envelopes securely and unopened until the Judges, shall have finished their examination ; when, should the Judges be of opinion that any one of the memoirs is worthy of the Premium , the corresponding envelope shall be opened, and the name of the author communicated to the INSTITUTE.
Էջ 252 - This medal is awarded for discovery or original research, adding to the sum of human knowledge, irrespective of commercial value ; leading and practical utilizations of discovery; and invention, methods or products embodying substantial elements of leadership in their respective classes, or unusual skill or perfection in workmanship.
Էջ 252 - States of competent scientific ability, to whom the memoir shall be referred ; and the said Judges shall examine the memoirs and report to THE FRANKLIN INSTITUTE whether, in their opinion, any, and, if so, which of the memoirs is worthy of the Premium.
Էջ 512 - January, one thousand nine hundred and fifteen, will, as soon as possible after this date, be transmitted to the Committee of Judges. 3. The Board of Managers of THE FRANKLIN INSTITUTE shall, before the first day of January, one thousand...
Էջ 386 - Arts, undertakes to make investigations free of charge and to recommend for the award all meritorious inventions. Applications should be addressed to the Secretary of THE FRANKLIN INSTITUTE, from whom all information relative thereto may be obtained.
Էջ 48 - Hazen clearly indicate that where one death from typhoid fever has been avoided by the use of a better water, a certain number of deaths, probably two or three, from other causes, have been avoided.