He settled in Cambridge at once. On 8th September, 1863, he 

 married Susan, daughter of Robert Moline, of Greenwich. This is 

 not the place to dwell upon his domestic life ; but it is impossible to 

 omit in silence all reference to its singular happiness, based upon the 

 affection felt by its members for one another. Friends and visitors who 

 have been in that home will not soon forget the kindness and the 

 gracious courtesy of the welcome they received, or the atmosphere of 

 peace into which they were raised. Sometimes in the old garden by 

 the riverside, more often in the drawing-room, the talk went on ; the 

 professor himself listening, attentive and watchful, frequently taking 

 only a slight share, but ever ready to join in. No cynicism or paradox 

 in speech was ventured upon in his presence ; no harshness of judgment 

 was tolerated without a quiet protest ; no sense of bustle or ambition 

 was felt there ; in all things the charm of an old-world home, centred 

 round him. His widow and their two children, Mary and Henry, 

 remain to mourn their loss. 



His teaching duty was limited to the delivery of one course of 

 lectures in the academic year, and he usually chose the Michaelmas 

 term. This practice was maintained for twenty-three years until he 

 was placed under the new statutes, which in 1882 had come into 

 operation, so far as concerned all future appointments. After that 

 change, he delivered two courses of lectures, one in the Michaelmas 

 term, the other in the Lent terra. An inspection of the list of his 

 lectures shows that he chose his subjects by preference from analytical 

 geometry, dynamics (in his view, theoretical dynamics is a portion of 

 pure mathematics), differential equations, theory of equations, Abelian 

 functions, elliptic functions, and modern algebra. The titles of the 

 lectures, as announced, were sometimes vague, nor were they intended 

 to limit his range ; in all cases he went far beyond the boundary that 

 so frequently limits Cambridge studies. Thus a course of lectures 

 on differential equations, announced for the Michaelmas term in 

 1879, was chiefly concerned with conformal representation, poly- 

 hedral functions, and Schwarz's investigations on the hypergeometric 

 series. 



For many years he dispensed with the use of blackboard and chalk 

 in his class-room ; this was possible because his class usually was 

 small. He brought his work written out upon the blue draft-paper* 

 which was regularly used by him in all his writing of mathematics ; 

 the exposition consisted partly of verbal explanations made as he 

 showed the manuscript, partly of details written out at the moment. 

 A change came in 1881, when his class amounted to fifteen or sixteen : 

 he was then obliged to use the blackboard, and he subsequently main- 

 tained the new practice. Occasionally his older habit of explaining 

 his manuscript recurred he then placed it upon the board. This 

 * It was the custcmarj " scribbling paper " of bis under graduate day?. 



