LETTERS TO THE EDITOR - C&EN Global Enterprise (ACS

Nov 5, 2010 - It is my humble opinion that it could not be improved upon either in its comprehensiveness, adequacy, or in the general conclusions draw...
0 downloads 4 Views 108KB Size
LETTERS TO THE E D I T O R

eop#

Industrial Alcohol Data DEAR SIR:

I do not often commend the editorial staff of C&EN on t h e excellence of its feature articles, because t h e general level of the articles is so uniformly good, it is difficult to single out o n e that seems worthy of special praise. However, the article, "Industrial Alcohol," which appeared Nov. 19, 1951, is such an excellent one, and since it happens that it is a field in which I a m particularly interested, I am taking this opportunity to commend you and your staff on the data you have presented o n this subject. It is m y humble opinion that it could not b e improved upon either in its comprehensiveness, adequacy, or in the general conclusions drawn as to t h e present status of the alcohol industry and its future possibilities. It is an article that deserves filing for reference purposes and no doubt all who are interested in the technical aspects of this field will find occasion to refer to these.data for many months to come. W I L L I A M L.

Baton

Rouge,

OWEN

La.

Now Riddle Me This D E A R SIR:

N O INK DIRECT WRITING RECTANGULAR COORDINATES PERMANENT RECORDS Electrical phenomena from a few millivolts to over 200 volts maybe readily and continuously recorded. Registration, by heated stylus on plastic-coated paper, is clear, sharp, permanent. Single-channel Model 1 28(Fig . l ) h a s standard speed of25 mm./sec. (slower speeds available). Two-channel Model 6 0 (Fig. 3) has ten speeds—0.5 to 100 mm./sec. Fourchannel Model 67 (Fig. 2) has eight speeds —0.25 to 50 mm.'/sec. Built-in timing and code marking, and ready interchangeability of Amplifiers (D.C. and Strain Gage) are features of all models. For complete descriptions, illustrations, tables of constants, and prices, send for catalog, using coupon below.

GEORGE D A R L I N G

• I I



• 142

England

I e



i: mA

C H A R L E S A. SOUTHWICK, JR.

Hope, N. J. Ize All Wet! D E A R SIR:

On the "Containers and Transportation" page ( 5 3 9 8 ) of C&EN for D e c . 17, 1951, please note the first heading: "Packaging Method for Uncarbonized Liquids." Tut! Tut! Are they "unpasteurated" too? JOSEPH A.

Lancaster,

BENNER

Pa.

Errata 2 EDITOR'S NOTB: The letter published below (read by turning page over between alternate lines) illustrates the problem facing readers of I6-JSC w h o may wish to make use of the "Errata" sheets published in the December issue. Errata sheets printed on one side only for the 1 9 5 1 volume of Industrial and Engineering Chemistry may be obtained free by writing to the Reprint Department AMERICAN CHEMICAL SOCIETY 1155 Sixteenth St., N.W. Washington 6, D . C. P.S. Wearing our I&EC editorial hat for a moment we report our face is beet-red. W e do disclaim the base motives suggested by our loyal yet critical reader Bill Plummer. D E A R SIR:

I do not w i s h t o b e a nuisance or it deliberately difficult for you to read call your attention to the fact that it read this letter than it will b e for of Industrial

DEAR SIR:

INDUSTRIAL DIVISION 39 Osborn St., Cambridge 39, Mass. Please send me complete catalog of Sanborn Industrial Recording Equipment.

City & State -

Kent,

Polyethylene Test

COMPANY

Street-

Sightless detective T c (Technetium) Element in the afternoon Pm (Promethium) River in Italy Po (Polonium! Preposition At (Astatine) Father, French Fr (Francium) Account Ac (Actinium) Pennsylvania Pa ( Proto-Actinium ) Sightless nip N p (Neptunium) Seat in a church P u (Plutonium J Morning element A m (Americium) So it may appear ( s e e - m ) Cm (Curium) Vowelless beak Bk (Berkelium) The element that is referred to Cf (Californium) Northfleet,

SANBORN

Company -

As a reader of C&EN magazines passed on to me I was interested to see in the "News-Scripts" columns for May 7 and May 14, 1951, the item b y Jerome Alexander on "The Mere Elements of Chemistry." Congratulations to him for presenting the elements in a n e w light. Here are a few of the more recently discovered ones:

package specification A N - P - 5 4 references this procedure some time in 1944 or '45. It was also used in a series of proposed Standard Test Methods developed b y t h e Packaging Institute w h i c h were circulated about 1946. The General Mills test used a ball rolled down an inclined trough and hitting the film held in a vertical plane, which a p pears to b e a n e w variation, but its virtues as compared to t h e vertical drop appeal to be doubtful unless there is an unexpected benefit to be gained b y not having the ball rest on the specimen after the impact. Regardless of the origin of the test methods or the details in connection with their use, this company should be commended for its work in getting weather balloons to greater altitude and making possible the delivery of propaganda b e hind the iron curtain.

In C&EN for D e c . 3, 1 9 5 1 , page 5148, there is a brief story entitled, "General Mills Develops N e w Test for Polyethylene." I found this story very interesting and it would appear that the test which was described gave accurate indexes of film durability; however, I wish t o point out that they can hardly b e called "new procedures." T h e method of evaluating film durability by dropping a steel ball from various heights has b e e n used before and I can cite two references, although I do not know of its origin. A military C H E M I C A L

and Engineering

Ghem-

page published in the December 1951 is printed on both sides of the page. trying to force your readers to buy an fers, not to mention increasing your an increase in your advertising rates?

WM.

B. PLU

Chicago, AND

ENGINEERING

NEWS