If Lathom was able to recognise and procure Amanita muscaria, could he not have boiled it on some previous occasion and added the poison to the stew in liquid form, so as to run less risk of my father’s recognising the intrusion of the wrong fungus?
(Answer: Very probably.)
(As regards the question of Means, therefore, it seemed clear that Lathom might readily have had access to the poison, and that there was no mechanical difficulty at all to prevent his having introduced it into the dish of mushrooms. When, however, we came to consider the subject of Opportunity, we were faced with a more important set of difficulties.)
B. Opportunity
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At what time was the poison actually administered to Harrison?
A terminus a quo is provided by the evidence of Harry Trefusis, who saw Harrison alive and apparently well at 10:30 a.m. on Thursday. By this time, Lathom was presumably in the train and on his way to London.
The terminus ad quem can be stated with rather less accuracy. From the fact, however, that the shin of beef delivered that morning was afterwards discovered still wrapped in its original paper, it appears quite certain that Harrison was rendered incapable of seeing to any household affairs before the evening. From my knowledge of my father, I should be prepared to swear that he would certainly never have left meat in this condition overnight. He would have put it on to boil for stock, or, at the very least, would have transferred it to a plate—particularly in the case of shin of beef, which, being glutinous, has a habit of sticking to the wrapping-paper. When I stayed at The Shack with my father, he was accustomed to have his evening meal about seven o’clock. After this, he would wash the crockery and tidy the place up, and put on any stock that might be required for the next day. He would then sit and read for an hour or two, retiring to bed about ten, possibly taking a cup of cocoa or some patent food before retiring.
It thus seems likely that the poison was taken between the hours of 10:30 a.m. and 8 p.m., and most probably at or about 7 p.m.
Question: What evidence have we that Lathom actually went to London by the 7:55 at all? Could he have returned to The Shack surreptitiously during the interval? By hiring a motor-bicycle or car, he might easily have made his way back from Bovey Tracey or (if this might appear too obvious) from Brimley Halt, Heathfield, Teigngrace of Newton Abbot. He could then have lurked about in the neighbourhood of The Shack till he saw Harrison go out, and taken the opportunity to add the poison to the dish or stockpot.
Note: To inquire as to Lathom’s movements in town. If anybody met him there on Thursday morning, this hypothesis falls to the ground. If not, to find out whether he really entered the train at Bovey Tracey, and if anybody of his description hired any sort of motor vehicle at any point along the line. This would not, in fact, cover every contingency, for an active man might easily have walked the ten or twelve miles between Newton Abbot and The Shack. A motor vehicle is perhaps more likely, as providing a quicker getaway after the crime.
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Is it possible that the poisonous fungus, or liquid prepared from fungus, was added, not to the fungus gathered by my father on the Thursday, but to some other collection of fungus gathered the previous day?
This appears unlikely, for three reasons. First: My father always made a great point of eating his fungi freshly gathered. It would have been quite unlike him to gather them overnight and eat them next day. He considered early morning the best time for picking fungus. He had stated his intention of gathering Warty Caps on the Thursday morning, and was, in fact, seen apparently doing so by the witness Coffin. Secondly: If the fungi eaten on Thursday night were gathered the previous day, what became of those gathered on Thursday morning? They were not found in The Shack. Thirdly: For Lathom’s purpose it was necessary that Harrison should have had the intention of gathering Warty Caps, and no other kind of fungus, since this is the only variety which could reasonably be confused with Amanita muscaria. It would appear, therefore, more than a coincidence that my father should have been seen gathering fungus in a spot where Warty Caps were usually to be found. Of course, Lathom’s evidence on this point is suspect, and verification is necessary.
Questions: Are Warty Caps (Amanita rubescens) actually plentiful in the spot where Harrison was seen by Coffin?
Can any of the contents of the dish of fungi actually be identified as Amanita rubescens?
When did Harrison mention to Lathom his intention of gathering Amanita rubescens? This question is important, because, if the poisonous fungi were introduced among the harmless ones in their natural state, it is absolutely necessary that the two varieties should bear at least a superficial resemblance to one another. Even in a half-cooked state, there could be no confusion between Amanita muscaria and, say, Chantarelles or Bolitus edulis or Amanitopris fulva. Unfortunately, no one can throw any light on this except Lathom himself, and it is not likely that he will tell the truth.
Note: To verify the habitat of Amanita rubescens, and, if possible, its presence in the actual dish of fungi analysed.
C. Further Questions and Objections (Miscellaneous)
If Lathom was guilty of administering poison to Harrison, why did he return to The Shack on Saturday? Would it not have been wiser to remain in town till the death was discovered?
This is an objection which to me appears to carry some weight. I can, however, see certain considerations which might account for a proceeding so apparently reckless from a practical point of view.
(a) Lathom may have wished to be
