1921 graduate Kazan’ Veterinary Institute.
1921-1928 assistant professor Chair of Pathological Anatomy, Kazan’ Veterinary Institute, where he worked under his father Professor K. G. Bol’. From 1928 until death head, Chair of Pathological Anatomy, Moscow Zoovetcrinary Institute (from 1948 Moscow Veterinary Academy).
Did research on the veterinary pathology of infectious diseases (glanders, infectious encephalomyelitis in horses, hoof-and-mouth disease, etc), on the metabolic pathology of high-yield cows and on the seasonal morphology of reindeer. His doctor’s thesis was devoted to the Patologicheskaya anatomiya i patogenez sapa lyogkikh loshadey (Pathological Anatomy and Pathogenesis of Glanders in Small Horses). 1932 led an expedition to study glanders in horses in Northern Caucasus.
His findings are reflected in instructions for the treatment of this disease. Made major contribution to veterinary medical with his research on infectious encephalomyelitis in horses, which he conducted in conjunction with Professor K. I. Vertinskiy. Their discovery of inclusion bodies in the ganglionic cells of the central nervous system in this disease (Bol’-Vertinskiy bodies) provided morphological proof that the disease is of viral origin, a fact which was confirmed by later research.
In the last years of his life studied the pathomorphology and pathogenesis of metabolic disorders in high-yield cows. Established that pathological lesions in the organs and tissues of these cows are caused by intoxication of the organism as a result of over feeding with highly-concentrated fodder. Helped to coordinate the various schools of veterinary medical which existed in pre-Revol Russia.
1935 drew up first program on pathological anatomy based on nosological principles for instruction at veterinary colleges.
Religion discourages exploration of science and universe by suppressing curiosity, and denies its followers a broader perspective.
Marxism–Leninism as the only truth could not, by its very nature, become outdated.