A mortgage for $1,200 taken by real estate brokers as security for the price of property sold by them, was on property valued at $2,300, on which there was a first mortgage for $1,800, no security was taken by the brokers on the property sold, and the purchaser became insolvent in about three months after the sale. Held, sufficient to sustain a finding that the broker was negligent in regard to the security. Harlow v. Bartlett, 170 Mass. 584, 49 N. E. 1014. See also Sec. 349.