Cotsen Ghosties

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book cover 3Last Halloween season we took a stroll through our special collections pumpkin patch. Today, we’re looking for ghosts! And we found them in this amazing optical illusion book titled Spectropia; or, Surprising Spectral Illusions. Showing ghosts everywhere, and of any color. Published by J.H. Brown in London in 1864, the book teaches the concept of “the persistency of impressions, and the production of complementary colours on, the retina.”

The illusion is very simple. In the image above, stare at the small black dot by the ghost’s neck for 20-30 seconds. Then look away at a white wall or ceiling. Her ghostly image will appear in your vision, except in different colors (in this case green wreath, blue ghost)!

Scientifically speaking, this is called an afterimage. The color receptors in your eyes work in pairs (red/green, blue/yellow, etc.). When you stare at the drawing and one color fatigues your receptors, the other receptor will step in and dominate for a bit.

The book has a very lengthy description of this concept, as well as viewing instructions that include having the “gaslight turned low.”

Spectropia also has a disclaimer at the beginning: “As an apology for the apparent disregard of taste and fine art in the plates, such figures are selected as best serve the purpose for which they are intended.”

I wish they might have reprinted the disclaimer before THIS image, which honestly is going to haunt me clear through December:

The book concludes with a grand finale image that is not a ghost, but a rainbow! Definitely try this one, because it is so cool to see the colors flip in the afterimage!

Looking more more optical spooky fun? Try making our tabletop Pepper’s Ghost illusion!

Images from Spectropia; or, Surprising Spectral Illusions. Showing ghosts everywhere, and of any color. J.H. Brown, London. Griffith and Farran.1864. Cotsen Children’s Library, Department of Special Collections, Princeton University Library.

Mysterious & Puzzling

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It’s truly a puzzler! Katie (and friends) test drove a Sherlock Holmes mystery jigsaw puzzle…deerstalker and pipe not included. Take it away Katie!

The Sherlock Holmes and the Speckled Band mystery jigsaw puzzle is by BePuzzled, a company that touts itself on forcing people to think and solve their games in unconventional ways. The puzzles are classic mysteries with a challenging twist: you read, build, and solve using clues from both the written story and the completed puzzle. I bought mine in a toy shop for $18.95 while on summer vacation in Rehoboth Beach, Delaware, but you can find it online for slightly less. The suggested age range is 15 and older.

The short story Sherlock Holmes and the Speckled Band originally appeared in the UK edition of The Strand magazine in February 1892. The story was later included in The Adventures of Sherlock Holmes collection, which was published in October 1892.
Inside the box is the 1000-piece unassembled puzzle and a booklet with the mystery to read.

The solution, which is the conclusion of the story, is provided but it is cleverly printed backwards. You read it by simply holding it up to a mirror, which is such a unique way to hide the answer!

I started by building the edges, and this is the point when I realized this puzzle was going to be more difficult than I had originally thought. In keeping with the mysterious nature, the finished image does not match the box cover. An SOS was sent to my library colleagues, inviting them to help.

A few folks answered the call and worked with me on Holmes’s latest case. Interestingly enough, every one of them had a different puzzle approach. One person took pieces that looked similar and lined them up in a row. Another moved pieces into piles and worked specifically on building a small section to later drop in.

One colleague clearly loved puzzles because she slowly and methodically finished around 1/6 of the mystery in just a few hours’ time. She’s the reason I can say I completed the puzzle in just under two weeks!

And yes, dear blog readers, I used some Photoshop magic to blur the puzzle. No spoilers from me!

Despite my (sometimes constant) groaning over not having an image to work from, I thoroughly enjoyed the puzzling challenge. It added an extra layer of intrigue and definitely more excitement when the puzzle was solved. I feel younger children can get involved with the puzzle build, though they may get frustrated since they don’t have any reference to a solution.

Even though I have partnered with Detective Holmes on many Cotsen-related adventures, I have never read Sherlock Holmes and the Speckled Band. I was entirely unaware of who or what was behind the unfortunate events described in the story, so the solution was quite a surprise. For those who may have already read the story and know what happened, this particular puzzle may not be the best option. Thankfully there are several other BePuzzled mysteries to choose from, including one from Alfred Hitchcock, and I assume each has a unique story line.

The mystery puzzles are afoot!

Interested in more Holmes posts? Try our virtual escape room, our live escape room, a review of a snail mail mystery game, and this super fun simple activity with rebus cards from our special collections!

Ivy Dogs

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Peter Putnam ’42 *50 and his guide dog Wick at Commencement, 1950. Historical Photograph Collection

Campus canines abound! Blog readers in the New Jersey area should definitely check out the Princeton 275 exhibit at the Seeley G. Mudd Manuscript Library. Curated by April C. Armstrong, Rosalba Varallo Recchia, and Iliyah Coles, the exhibit’s selections showcase Princeton University’s growth and transformation from its first charter in 1746 to today. It’s fascinating and thoughtful, touching on topics such as racial integration, coeducation, and inclusion. The Mudd Library exhibit is open to the public and free of charge.

What caught our eye at the exhibit was the image you see above. That’s Peter Putnum, Princeton undergraduate class of 1942 and Wick, his amazing guide dog. Putnam lost his sight between his sophomore and junior years, and, despite worries that the University would be able to accommodate him, graduated with high honors in modern languages. Putnum continued on to earn a Ph.D. in history and had a long career as a writer and activist.

You can read more stories behind the Princeton 275 exhibit here, but Wick got me and Katie thinking about other famous dogs on campus. We found some interesting connections, starting with the secret bulldog on the University Chapel!

Legend has it that the bulldog (the mascot of Princeton’s rival Yale) was sneakily added to the drainpipe by the Chapel architect, Ralph Adams Cram. The myth has since been debunked, as Cram did not attend Yale. But who knows? SOMEONE placed the bulldog on the drainpipe in Princeton tiger territory.

Another pair of famous canines are Bo and Sunny Obama. Though technically they never came to campus – former First Lady Michelle Obama was a Princeton student in the 1980s – we like to think they would have enjoyed being with her! Below is a White House holiday card sent to Princeton faculty member Toni Morrison, personally signed by the Presidential family (and the doggies!).

The Toni Morrison Papers, Department of Special Collections, Princeton University Library

We started with Wick, and we wanted to finish the post with another famous campus service dog currently on active duty. Meet Sgt. Alvan Flanders and Coach, two beloved members of Princeton University’s Department of Public Safety team.

Photo by Denise Applewhite, Office of Communications

Coach is not a police canine in that she does not sniff for drugs or explosives. She was trained by Puppies Behind Bars, an organization that works with prison inmates to prepare dogs for community caretaking roles. Coach and Sgt. Flanders bring support, joy, comfort, and smiles to countless students.

Photo courtesy of Anne Kuehl

If you would like to see more historical images of dogs on campus from the Princeton University Archives (including Princeton’s capture of the Yale bulldog – perhaps in revenge for the drain pipe?) you will find the gallery here.

Many thanks to April Armstrong for the personal tour of the Princeton 275 exhibit, which runs through October 30th, 2022