64 
three days later, when the dark form started to emerge freely, I placed 
(as a trial) three $> s and three $ s of this form in the same cage, but 
they would not even “ make love ” to each other nor would the 2 s let 
the $ hutckinsoni (still in the cage, and willing to pair) approach 
them. They behaved just as in 1905, and two 2 s and one $ are 
hybernating now, while the other three have died for some unknown 
reason. 
These are my experiences of three separate years, and each year has 
served to further convince me that the two statements J have made 
are correct. 
OBITUARY. 
JOHN ADOLPHUS CLARK, M.P.S., L.D.S., F.E.S. 
Since the annual meeting held on December 1st, 1908, which 
marks the end of the Society’s year, and should also mark the limit of 
the chronicle of events in this volume, the Society has sustained a 
grave loss through the death of Mr. J. A. Clark. The Council feels 
that this volume cannot be issued without some reference to this sad 
event, and further that, in view of Mr. Clark’s almost, if not indeed 
altogether, unique position in regard to the Society, more ample 
notice should be accorded thereto than is usually allotted to the record 
of the demise of a member. This departure from the usual custom 
will doubtless meet with the cordial approval of members in general, 
and will especially commend itself to the older members who know 
how much the Society was indebted to Mr. Clark, more especially in 
times long past, Avhen the Society was in a far less satisfactory condi¬ 
tion than is now the case. 
At the request, therefore, of the Council the writer has gathered 
together such facts concerning Mr. Clark’s relationship to the Society 
as are ascertainable from its records ; unfortunately it appears that 
previous secretaries have not always felt it incumbent upon them to 
lodge the minute books, when completed, in the Society’s library, and 
it has therefore proved impossible to completely trace the course of 
Mr. Clark’s connection with the Society. 
A brief reference to his life, as apart from the Society, will doubt¬ 
less not be considered out of place. 
Mr. Clark was born at Aldermanbury (London), in November, 
1842, and spent the early years of his life at Iiomerton, then a very 
different district to what it is now ; members will remember that the 
collecting possibilities of Hackney marshes in the days of his youth 
were always a topic on which Mr. Clark liked to dwell. After serving 
for a time as assistant to a medical practitioner he went into business 
as a chemist in the Broadway, London Fields, and continued there 
until his retirement in 1896. A few years ago he was brutally attacked 
xviii. 
