. The literary digest. s turn produces the tubercles. This new contribution to the study of mushroom-germinationis very important; it may open a way to the discovery of analo-gous phenomena in species that we should be glad to be able tocultivate, such as the morille, which we can not now propagatebecause we have too little knowledge about the earliest phases ofits development. —Translated for Tw.^ Literary Digest. THE LATEST ARITHMETICAL PRODIGY. THE most recent among the tribe of lightning calculators isa Greek named Diamandi, now living at Paris. His featsand peculiarities, which have recen
. The literary digest. s turn produces the tubercles. This new contribution to the study of mushroom-germinationis very important; it may open a way to the discovery of analo-gous phenomena in species that we should be glad to be able tocultivate, such as the morille, which we can not now propagatebecause we have too little knowledge about the earliest phases ofits development. —Translated for Tw.^ Literary Digest. THE LATEST ARITHMETICAL PRODIGY. THE most recent among the tribe of lightning calculators isa Greek named Diamandi, now living at Paris. His featsand peculiarities, which have recently been made the subject ofscientific investigation, are described in La Nature (Paris, Jan-uary 19) by M. HenriCoupin. Says thiswriter : I saw recently a cal-cu la ting prodigy, , who has beenin Paris for three or fouryears, but who has justbegun to appear in pub-lic. Among other feats,M. Diamandi performsthe following: i. An assistant is re-quested to dictate a tableof twenty - five figures,for instance:. 7 9 S 4 6 2 I q 7 8 3-25491680754968 These figures, beingwritten by an assistanton a blackboard, M. Dia-M. DIAMANDI. Hiandi looks at them steadily for an instantand then, turning toward the audience, he recites them, firstin vertical columns and then spirally. He then asks that certainparts of the table be designated, and he names at once thefigures that occupy these places. His answers are made un-hesitatingly. We feel that he has the table before his eyes; wehave only to see his performance to realize that he is a visual,as will be explained further on. 2. He is asked [for instance] how many seconds there are ineighty-seven centuries, taking leap-years into account. He an-swers almost at once, and without writing a single figure, 274,-551,120,000, which is the correct answer. 3. He extracts mentally the square root of 542,380 and thecube root of 493,989. 4. He is given simultaneously the five following operations : 4,875,328,540— ,160,781 986 X 98628 X
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