1864.] MISCELLANEOUS. 237 



formation. Bairdia aii<l Kirhhya occur first in the Carlionif rous 

 and re-appear in the Permian deposits, even in tl e same specific, 

 forms ; an I Bairdia li is been freely represented in S condMry and 

 Teriiary deposits, and exist.s ai present. Of" the Cyiyrilirudoe, under 

 notice, Cypridella, Cyprelli^ and Eihtomoconchas a|»pear t<» be 

 confined to the Mo'iniain-liiaestone ; Cyprldina occurs in ihe 

 Perm an, and with Gytherella is found in Seconda y and Tertiary 

 rocks, and in existing sea-^. Entomis is a Silurian and Devonian 

 genus, especially characterizing the so-called ''Cypridinen-Schiefer" 

 of Germany. 



M:'<^of^ Daohna priinoev'i \s a, Gypridina] De Koninck's Cy- 

 pridiiia Edwardsiaiia and f^yor'idelU craci'ttn are Gypfideilce : 

 his G /pridiaa annulala and Gyp>eUa chrys didea are GypriUce y 

 and his Gypridina coticnitnca is an Entomis, 



MISCELLANEOUS. 



THE LATE PRINCIPAL LEITCH. 



Our issue of yesterday contained the sad, though not unex- 

 pected, announcement of Principal Leitch's death. William 

 Leitch was born at Rothsay, in the Island of Bute, Scotland, in 

 the year 1814, and was at his death under tifty years of age. 

 The robust health of his boyhood was taken from him by an acci- 

 dent, which confined him for eighteen months, and threatened 

 even his life before he recovered. When about fourteen years of 

 age he fell from the mast of a yacht in the bay of his native town, 

 and the fall produced a comminuted fracture of the hip-joint, 

 which made him lame for life. This accident was the occasion of 

 determiningjio a somewhat remarkable way,the tendencies by which 

 all his subsequent life has been characterized ; for during his long 

 and dreary confinement, the relief from intense suffering, which 

 most boys of even high intellectual character would have sought in 

 the fascination of fiction, he found in the study of mathematics ; 

 and his after life, which became almost from necessity that of a 

 student, was devoted chiefly to the mathematical sciences. After 

 finishing his preparatory studies for the Church of Scotland, he 

 did not immediately enter on the practical work of his profession, 

 but remained for some years in connection with the Glasgow 

 Observatory, under the late Professor Nichol. In the year 

 1843 however, he accepted a presentation to the Parish of Moni- 

 mail in Fifeshire, where he found that congenial quiet in which he 



