Journal of bacteriology . atures,and keep a stock on hand of the more popularsizes for immediate delivery. COMPLETE DESCRIPTIVE PAMPHLET SENTUPON REQUEST C. S. &, E. ANHYDRIC ELECTRIC INCUBATORS The walls of these Incubators consistof five-ply wood, tar paper, animal hairand transite. No water jacket is usedand the C. S. & E. Electric Thermostatmaintains a constant temperature withini° C with no attention after adjustmentis once made. No special switch orwiring is necessary as the Incubatorsoperate on any 110 volt alternating ordirect circuit by screwing plug intoordinary lamp socket, and will
Journal of bacteriology . atures,and keep a stock on hand of the more popularsizes for immediate delivery. COMPLETE DESCRIPTIVE PAMPHLET SENTUPON REQUEST C. S. &, E. ANHYDRIC ELECTRIC INCUBATORS The walls of these Incubators consistof five-ply wood, tar paper, animal hairand transite. No water jacket is usedand the C. S. & E. Electric Thermostatmaintains a constant temperature withini° C with no attention after adjustmentis once made. No special switch orwiring is necessary as the Incubatorsoperate on any 110 volt alternating ordirect circuit by screwing plug intoordinary lamp socket, and will operateon 220 volt direct or alternating circuitby simply changing the voltage of thelamp heaters. These are supplied in sixdifferent sizes,the smallest with inside dimensions9x7x7 inches at $ and the largest—as shown in illustration—with insidedimensions 30 x 36 x 18 inches at $,all of which are carried in stock inPhiladelphia for immediate shipment. COMPLETE DESCRIPTIVE PAMPHLETSENT UPON REQUEST. No. 20740 Hearson Gas Heating Incubator ARTHUR H. THOMAS COMPANY IMPORTERS-DEALERS—EXPORTERS LABORATORY APPARATUS AND REAGENTS WEST WASHINGTON SQUARE PHILADELPHIA, U. S. A. BIOLOGICAL VARIATIONS OF BACTERIA^I. Induced Variations in the Cultural Characters OF B. COLI M. R. SMIRNOWYale Medical School, New Haven, Connecticut Variations in the biological characteristics of the various mem-bers of the Colon-typhoid group have been reported by num-erous investigators. These range from mere observations asto peculiarities in the fermentative or other biological testsup to actual mutations as interpreted by De Vries. The most important observations along the latter line arereported by Massini (1907), who isolated a type of B. coli hecalled B. coli-mutahilis. In his observations, he found thisorganism would produce flat colorless colonies on Endos medium,if transplanted every twenty-four hours. When transplantedat a later period, however, it would produce nodular shapedcolo
Size: 1396px × 1789px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherbaltimorewilliamsw
