“They accumulate in time, finally they summate, and exercise their influence even at the beginning of the service.”
“Again, the electrical effects induced in the bipolar cells may summate at the dendritic processes of a ganglion cell so that the receptive field of a ganglion cell may embrace many thousands of rods.”
“The toxicity of those individual chlorinated organic compounds generated by bleached pulp mills which have been studied in the laboratory does not summate to more than a few percent of the observed toxicity of the effluents.”