He led the anthropological investigations related to the Growing City and was one of the first to process the City's finds. He established original anthropological theories on examining the anthropological ratios of the region's later population, which stirred up numerous storms in academic circles. In the end his Bohemian temperament and fanatic capacity for work together resulted in his leaving a massive bequest of data which, however, is difficult to place a value upon, and which causes many a headache to today's scholars.
Detail from his diary, undated (maybe from 1908):
"In the end, when the individual was not prepared to undress completely, nor wished to remove his hat, I with the aid of my assistants forced him to suffer motionlessly the recording of data I so fervently desired. All this I performed purely in the name of science." To Kowalski-Segner's name is attached the belief, now considered somewhat extravagant, that every individual bearing a triangular birthmark is in some form a late descendent of the Growing City's royal line. There have always been reservations in academic circles against this claim, but knowing Kowalski-Segner's special connections with the Near East , opposing opinions had always appeared to lack strength. Some science historians consider his name to be attached to the firework element known as the "Segner-wheel"; indeed, according to scandalmongers his research was financed by his successful patenting of it.
Other scholars, this time based upon his investigations, risk making the hypothesis that the triangle-shaped birthmark known as Nævus Triangularis is the reason for the spread of triangular writing in and around the Growing City.
Kowalski became confused in his later years, and attempted to create a peculiar radio detector with which he wished to receive messages arriving from the World Beyond. He was often to be seen in the vicinity of Paris's Place d'Italie, where he believed reception conditions to be the best in Europe. He claimed his radio, christened H.E.A.V.E.N. 193, to have entered contact with Mallerme. (62) Rotatable wire structures tinkled all around from his strange, yellow-painted Hispano-Suiza.
His final attempts at publication disperse into uninterpretable fragments, wearing all the signs of his sickness, although they also contain flashes of genius. His last words, according to mourning friends around his deathbed, were:
"God is only prepared to communicate with us by mail."

Minutes books of the Vicenza conferences
John Gherle: All About the Triangle, Cambridge University Press, 1931
Picture of his birthplace near Bréma
As a young man, the legendary hat on his head, with his pet dog Cicero
Kowalski-Segner's tombstone in Salzburg, with damage of unknown origin

The jettatore

There is no question that in the history of Growing City research Kowalski-Segner received the role of jettatore (troublemaker), an announcement that undoubtedly requires some explanation. We can encounter jettatore all over the world, yet the belief system enveloping them is most strongly found in countries with a Latin culture. As a rule they are male, but this cannot be taken as a firm rule. Allegedly in some countries jettatrice are quite common. They can certainly be considered the most bizarre of all humanoid animals. Should we recognise them with all certainty, we should be careful even about saying their name aloud, but a quick protective spell does no harm either (immediately touching a metal surface, etc.). The best protection against accidents caused by the jettatore is a rabbit's foot kept permanently in one's pocket and stroked lengthwise at the critical moment. Giancarlo da Bologna believes it is sufficient to keep a few fish scales in one's waistcoat pocket. Many swear that the most reliable form of "great protection" is to hang red coral sprigs from one's coat lapels. Jettatore are relatively easy to identify, for in their company peaceful garden cafes turn into battlefields when with wide gestures they knock the ten coffees, cups, sugar and so forth out of the hands of the arriving waiter, to splash all over one's summer clothes. Should they arrive as unsuspicious guests, the lady of the house will trip over the threshold and spill the steaming soup onto the floor. Later some of the cutlery will go unaccountably missing. As a result, sharp dropped comments will become widespread, and fatal family feuds ensue. As is well-known, the jettatore arrived flower in hand and departed with a kiss to the hand. It is, therefore, a bringer of ill-luck, at whom all tremble. As a rule it is unaware of its own magical potency. You will recognise the jettatore if one travels opposite you, because you will be informed of a train strike at the next station, or the train will derail, or both.
You should be especially on your guard against its arrival at times of unpleasant chores. For instance, the jettatore is bound to make an appearance when you have to stick up posters about your exhibition on a main road during a winter downpour. It will greet you with evident brashness, and when it slaps you on the back you will step backward ankle-deep into the melting slush. It will help you politely back onto the pavement as with its foot it sweeps all your favourite tools into the nearest drain opening. Then it expresses how sorry it is, assures you of its sympathy, and then waves, tottering across the road through the jumble of crashed, horn-sounding traffic of which it is the cause. Having recovered from the excitement you turn into a public house for a pint of ale, where the hitherto sleeping dog of the landlord inexplicably attacks you and bites your posterior. Better to suffer the coral twigs...

Toward an anthropological examination of the Growing City's latter-day population
Attached to Kowalski-Segner's name is the fallacious view according to which the characteristic types of the old inhabitants of the City could be deduced through the anthropological ratios of the region's later inhabitants. We now have certain reservations as regards this claim. One instrument used for the above examinations was the measuring instrument known as the Segner-type anthropological metricum.
Sketch plan of the "anthropological metricum" used by Kowalski-Segner