APPENDIX. 85 
1887, July 30. — Prof. Heppre wrote to me on May 6th., 1892: 
“J would just say that having taken bearings on the land, in 
order to estimate — (of course roughly) — the J/engt/, and the 
speed, I set down the length at from 60 to 65 feet. There was a 
very low flat head like a large skate, say 4'/, feet — a gap not 
so great, — ten “hummocks” increasing in bulk and altitude to- 
wards the central one, but not much — gaps not so great as the 
size of the hummocks, next a space, about equal to two hum- 
mocks, then three hummocks, the central one largest , the last small”. 
“The thing I saw appear three times — first time end on was 
a worthless observation, except that on this occasion the whole was 
rushing through the water. On the other two occasions there was 
hardly any forward motion at all. The whole disappeared at the 
same moment, and reappeared also at the same moment, about 
two seconds thereafter more than its own length in advance; so 
that there must have been either an exceedingly rapid rush under 
water — or a second animal. The disappearance and reappearance 
were both without the /east splash; but at the moment of disap- 
pearance the second time ¢he foremost two of the last three hum- 
mocks coalesced into one’. 
“During one of the appearances I got the focus of the binocu- 
lars so sharp that I distinctly saw water falling over towards me, 
between some of the hummocks and myself. There was no conse- 
cutive filling up of the mterspaces whatever, or appearance of va- 
cuities where the hummocks had but now been”. 
“There was certainly no vertical serpentine motion — and I could 
see no dateral one’. 
“My impression was that, setting aside the quiescent low head, 
I did not see a sohd substance at all, — except when the tail 
hummocks momentarily appeared — and that what I did see was 
water being thrown over laterally by the undulous lashings of a 
long back fin of a dark colour, which gave opacity’. 
“T cannot set the “hummocks” down to surge waves of a rushing 
short fish; because I cannot so explain such surges being always 
the same both in zumber and in place: nor can I so explain the 
appearance of an apparently solid head — and an apparently con- 
tinuous tail”. 
“The above is all from memory”. 
The following is the 
“Relation regarding a Phenomenon seen by the crew and Owner 
and guests of the yacht Shiantelle on the W. coast of Scotland on 
