pers cut across a host of scientific disciplines including virology, biol ogy, metals, and other crystals and particulate materials. The 1958 meeting, held at Santa Monica, California, was the first held west of the Rocky Mountains. The registration and number of pa pers presented indicated a strong interest in this field on the West Coast. International activities. As noted above the quadrennial inter national meeting of the electron microscopists will be held at the Uni versity of Pennsylvania. The 1966 meeting will be held in Tokyo. The Fourth International Con gress for Electron Microscopy was held in Germany in 1958 under the auspices of the International Fed eration of Electron Microscope So cieties which includes societies from 13 countries. About 1000 persons from 36 countries gathered at this meeting to hear 400 papers. This was a considerable increase over the 400 registration at the 1954 meeting in London. Education. According to Dr. Rochow, the future of electron mi croscopy depends on education and training. Whatever the field of specialization of chemists, a knowl edge of optical and electron micros copy is helpful. This knowledge may be imparted in special courses or integrated with college courses in chemistry, physics, metallography and biophysics. In addition to physical optics, the general importance of the physiol ogy of the eyes and the psychology of seeing should be imparted. Another form of training for electron microscopists consists of studying electron micrographs and techniques of colleagues. The EMSA displays such items at its meetings and prepares some in the form of traveling exhibits. Efforts are being made to arrange an inter national exchange of such exhibits. EMSA members also take part in efforts to prepare bibliographies, to define terms, and to specify tech niques. This project is being handled by Subcommittee 28 of ASTM's Committee E-l on Micros copy.
n/o
STIRRERS SET THE STANDARD . . .
Model |7605
Model A Direct Drive Stirrer suitable for the majority of a laboratory's stirringoperations. Inexpensive yet thoroughly re liable. Several of these can be used in place of multiple stirring units. Agitates 5 gals, water thoroughly and continu ously.
The heavy duty stirrer, incorporating all the features of power, ruggedness and durability . . . .with the addition of reduction gears giving high torque at low speeds . . .for any job in the laboratory from the lightest to the heaviest. SPECIFICATIONS: Sturdy Bodine Series wound motor Vis hp
SPECIFICATIONS: • Sturdy Bodine Series wound motor with bronze sleeve type bearings 1/100 hn • Rheostat Speed Control to 5000 RPM • true running chuck holds Ά " rods.
Table-Top Speed Control Rheostat 6:1 gear reduction—High speed shaft—5000 RPM
.110 Volts AC-DC * Stainless Steel Mounting
Low speed shaft—833 RPM any port by holders. clamP
Torque of 3.0 in pounds true running chuck for s / i e " rods
• support rod 5"
mounting rod 6"
• weight 3 pounds
weight 6V2 pounds
PALO LABORATORY SUPPLIES, Inc. 81 READE STREET · NEW YORK 7, Ν. Υ. · Tel. COrtlandt 7-0075
N A T I O N A L
APPLIANCE
32 CUBIC FOOT INCUBATOR
National Appliance Co. 7634 S. W . Capitol Hy. · Portland 19, Ore. Eastern Sales: H. Reeve Angel & Co., Inc. 9 Bride Well PI. - Clifton, N. J.
An economical investment for large volume incubation of tube and plate cultures. Excellent for classroom, in cubators can be placed side by side. Will accommodate large containers such as 5-gal. carboys. 30 square feet of adjustable nickel-plated shelves. Additional shelves can be installed any time. Blower convects air through side wall ducts from bottom heating chamber to top and downward over work area. Fully instrumented. Tempera ture controlled by hydraulic thermo stat and limited by safety thermostat. Temperature—room to 65 ° C. Max. temp, differential Γ C. Interior white baked enamel—exte rior durable light beige enamel over steel. Outside: 36" w., 30" d., 90" h. Inside: 31" w., 24Vi" d., 74" h. 2" fiberglas insulation. 1500 watts, 115, 208, or 230 volts AC. Write for bulletin or catalog of com plete N. A. line. N A T I O N A L
APPLIANCE
Circle No. 68 on Readers' Service Card
VOL. 32, NO. 7, JUNE I960
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77 A
